Complete the given passage using appropriate verb forms. This grammar worksheet is for students of classes 9 and 10. <\/p>\n\n\n\n
The native Huichol community of the Sierra Madre mountain range of west central Mexico \u2026\u2026\u2026\u2026\u20261\u2026\u2026\u2026\u2026\u2026 (has \/ have \/ is) no access to electricity. The lack of electricity \u2026\u2026\u2026\u20262\u2026\u2026\u2026\u2026 (has \/ does \/ is) an adverse effect on the Huichol economy \u2013 the people can only work during daylight hours.<\/p>\n\n\n\n
Now, a team of scientists \u2026\u2026\u2026\u20263\u2026\u2026\u2026\u2026. (use \/ is using \/ are using) new technologies to provide the Huichol with light after the sun \u2026\u2026\u2026\u2026\u20264\u2026\u2026\u2026\u2026 (sets \/ is setting \/ has set). The technique \u2026\u2026\u2026\u20265\u2026\u2026\u2026\u2026.. (involves \/ is involving \/ has involved) weaving tiny electronic crystals into fabrics that can be made into clothes, bags, or other items. Their inventors \u2026\u2026\u2026\u20266\u2026\u2026\u2026.. (name \/ are naming \/ have named) the textiles “Portable Lights.”<\/p>\n\n\n\n
\u00a0At the core of Portable Light technology \u2026\u2026\u2026\u2026\u20267\u2026\u2026\u2026\u2026. (is \/ are \/ have) devices called high-brightness light-emitting diodes, or HB LEDs. When electric current \u2026\u2026\u2026\u2026\u20268\u2026\u2026\u2026\u2026. (is passing \/ passes \/ pass) through the LEDs, their crystal structure \u2026\u2026\u2026\u2026\u20269\u2026\u2026\u2026. (vibrating \/ is vibrating \/ vibrates) and produces light.<\/p>\n\n\n\n
The Portable Light team \u2026\u2026\u2026\u202610\u2026\u2026\u2026.. (weave \/ weaves \/ is weaving) two LEDs into a plastic-coated textile. When \u2026\u2026\u2026\u2026\u202611\u2026\u2026\u2026\u2026 (turn \/ turned \/ turning) on, these LEDs can make the entire piece of fabric glow. The researchers use a new type of solar panel to tap sun\u2019s energy. These panels can be easily \u2026\u2026\u2026\u2026\u202612\u2026\u2026\u2026\u2026. (sew \/ sewed \/ sewn) onto a piece of fabric. Circuits \u2026\u2026\u2026\u202613\u2026\u2026\u2026\u2026 (connect \/ connected \/ connecting) the solar panel to a lithium ion battery\u2014the type of battery found in laptops and cellular phones. And the battery, in turn, \u2026\u2026\u2026\u2026\u202614\u2026\u2026\u2026\u2026.. (connects \/ is connected \/ connecting) to the two LEDs in the fabric. A tough layer of plastic \u2026\u2026\u2026\u2026\u202615\u2026\u2026\u2026\u2026 (protected \/ protects\/ is protecting) the circuitry.<\/p>\n\n\n\n
Answers<\/p>\n\n\n\n
The native Huichol community of the Sierra Madre mountain range of west central Mexico has<\/strong> (1) no access to electricity. The lack of electricity has<\/strong> (2) an adverse effect on the Huichol economy \u2013 the people can only work during daylight hours.<\/p>\n\n\n\n Now, a team of scientists is using<\/strong> (3) new technologies to provide the Huichol with light after the sun sets<\/strong> (4). The technique involves<\/strong> (5) weaving tiny electronic crystals into fabrics that can be made into clothes, bags, or other items. Their inventors have named<\/strong> (6) the textiles “Portable Lights.”<\/p>\n\n\n\n \u00a0At the core of Portable Light technology are<\/strong> (7) devices called high-brightness light-emitting diodes, or HB LEDs. When an electric current passes<\/strong> (8) through the LEDs, their crystal structure vibrates<\/strong> (9) and produces light.<\/p>\n\n\n\n The Portable Light team weaves<\/strong> (10) two LEDs into a plastic-coated textile. When turned<\/strong> (11) on, these LEDs can make the entire piece of fabric glow. The researchers use a new type of solar panel to tap sun\u2019s energy. These panels can be easily sewn<\/strong> (12) onto a piece of fabric. Circuits connect<\/strong> (13) the solar panel to a lithium ion battery\u2014the type of battery found in laptops and cellular phones. And the battery, in turn, is connected<\/strong> (14) to the two LEDs in the fabric. A tough layer of plastic protects<\/strong> (15) the circuitry.<\/p>\n","protected":false},"excerpt":{"rendered":" Complete the given passage using appropriate verb forms. This grammar worksheet is for students of classes 9 and 10. The native Huichol community of the Sierra Madre mountain range of west central Mexico \u2026\u2026\u2026\u2026\u20261\u2026\u2026\u2026\u2026\u2026...<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[231],"tags":[156,1735,689],"class_list":["post-75189","post","type-post","status-publish","format-standard","hentry","category-class-10-worksheets","tag-class-10-grammar-exercises","tag-class-10-tenses-worksheet","tag-tenses-worksheet-for-class-10"],"_links":{"self":[{"href":"https:\/\/perfectyourenglish.com\/blog\/wp-json\/wp\/v2\/posts\/75189","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/perfectyourenglish.com\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/perfectyourenglish.com\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/perfectyourenglish.com\/blog\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/perfectyourenglish.com\/blog\/wp-json\/wp\/v2\/comments?post=75189"}],"version-history":[{"count":1,"href":"https:\/\/perfectyourenglish.com\/blog\/wp-json\/wp\/v2\/posts\/75189\/revisions"}],"predecessor-version":[{"id":75190,"href":"https:\/\/perfectyourenglish.com\/blog\/wp-json\/wp\/v2\/posts\/75189\/revisions\/75190"}],"wp:attachment":[{"href":"https:\/\/perfectyourenglish.com\/blog\/wp-json\/wp\/v2\/media?parent=75189"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/perfectyourenglish.com\/blog\/wp-json\/wp\/v2\/categories?post=75189"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/perfectyourenglish.com\/blog\/wp-json\/wp\/v2\/tags?post=75189"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}