7. Since he_______, I have heard nothing from him.
A. had left B. left C. has left D. was leaving
8. When her husband was in the army, Mary ______ to him twice a week.
A. was reading B. wrote C. was written D. had written
9. Our teacher requested that we _________ our exercises before Friday.
A. complete B. completing C. completed D. be completed
10. It is compulsory that he _________ the rent to the landlord.
A. pays B. pay C. paid D. be paying
11. It is a good idea that the newcomers _________ with enough equipment.
A. provide B. provided C. be providing D. be provided
12. My brother has worked for _______ shoe-making company for 3 years.
A. a B. an C. the D. Ø