English Language (Use of English) Past Questions and Answers

In question below fill the gap with the appropriate option:
Baba and .... participated in the tournament

In question below fill the gap with the appropriate option:
It was .... who fought the civil war

In question below fill the gap with the appropriate option:
The physicians have more people in ..... waiting rooms than ....

In question below fill the gap with the appropriate option:
Before mechanization, workers ... water out of fabrice with their hands

In question below fill the gap with the appropriate option:
Four engineers .... on this system since March