CBSE Class 10 English Grammar Worksheet | Tenses Worksheet

Complete the following sentences with an appropriate verb form. This English grammar worksheet tests a student’s understanding of different verb forms.

Class 10 CBSE Tenses Worksheet

From the four suggested answers choose the one that will complete the sentence correctly.

Biomedical researchers ……….1…………. drugs capable of defeating ‘super bugs’, the bacteria that ……….2………… resistance to common antibiotics. Researchers at the Boston University’s College of Engineering ………..3…………. a previously unknown chain of events occurring in bacteria that ……….4………. the door to new avenues of research. The findings may revitalize development of antibiotic drugs that ………5………. their job better.

1. a) almost developed; b) have almost developed; c) are almost developed; d) had almost developed

2. a) has developed; b) have developed; c) had developed; d) developed

3. a) discovering; b) have discovered; c) are discovering; d) discovered

4. a) open; b) opens; c) opened; d) is opening

5. a) did; b) would do; c) will do; d) had done

Answers

Biomedical researchers have almost developed drugs capable of defeating ‘super bugs’, the bacteria that have developed resistance to common antibiotics. Researchers at the Boston University’s College of Engineering have discovered a previously unknown chain of events occurring in bacteria that opens the door to new avenues of research. The findings may revitalize development of antibiotic drugs that will do their job better.