Question

4. Dirty drains and unclean surroundings(cause/causes) infectious
diseases to spread

5. Everyone selected to serve on this committee(have/has)to be willing to
devote a lot of time to the activities.

6. He seems to forget that there(are/is)things to be done before he can
graduate.

7. There
(have/has)to be some people left in the village in spite of the flood.
8. Three-quarters of the students(is/are)
against the fee hike.

9. Three-quarters of the student body(is/are)against shorter summer
vacations.
10. The big dog(has/have)
given birth to puppies. ​

Answer 1

4. Dirty drains and unclean surroundings cause infectious  diseases to spread

5. Everyone selected to serve on this committee has to be willing to

devote a lot of time to the activities.

6. He seems to forget that there are things to be done before he can

graduate.  

7. There  has to be some people left in the village in spite of the flood.

8. Three-quarters of the students are

against the fee hike.  

9. Three-quarters of the student body are against shorter summer

vacations.  

10. The big dog has

given birth to puppies.

Answer 2

committee(have/has)to be willing to

devote a lot of time to the activities.

6. He seems to forget that there(are/is)things to be done before he can

graduate.

7. There

(have/has)to be some people left in the village in spite of the flood.

8. Three-quarters of the students(is/are)

against the fee hike.

9. Three-quarters of the student body(is/are)against shorter summer