Tenses Exercise For Class 10 CBSE
Fill in the blanks with an appropriate tense form.
It was the most challenging unmanned mission ever undertaken by NASA. The mighty Atlas V rocket ……………………….. (lifted / had lifted / have lifted / was lifting) off from the Cape Canaveral Air Force station on January 11, 2006. On board ………………………. (was / were / is / has been) a spacecraft named New Horizons and its destination …………………………. (is / was / has been / had been) Pluto, the planet furthest away in the solar system.
New Horizons ………………………… (has powered / is powered / was powered / has been powered) by 24 pounds of radio active plutonium. It …………………….. (uses / used / would use / will use) nuclear energy because solar power …………………….. (cannot / will not / would not / may not) operate in the region around Pluto. The spacecraft …………………….. (weighs / weighed / has weighed / was weighing) 405 kg when fully fuelled and …………………………. (is equipped / was equipped / has been equipped / had been equipped) with seven instruments to carry out different types of studies.
Answers
It was the most challenging unmanned mission ever undertaken by NASA. The mighty Atlas V rocket lifted off from the Cape Canaveral Air Force station on January 11, 2006. On board was a spacecraft named New Horizons and its destination was Pluto, the planet furthest away in the solar system.
New Horizons was powered by 24 pounds of radio active plutonium. It used nuclear energy because solar power would not operate in the region around Pluto. The spacecraft weighed 405 kg when fully fuelled and was equipped with seven instruments to carry out different types of studies.
