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