1. Since________, I have heard nothing from him. A. he had left B. he left C. he has left D. he was left 2. He has been to the school library many times_____. A. while the semester is starting B. after the semester starts C. if the semester has started D. since the semester started 3. When she came home from school yesterday, her mother _______in the kitchen. A. cooked B. was cooking C. is cooking D. cooks 4. Mary __________ extremely hard when she was a student. A. worked B. had been working C. was working D. had been worked 5. I __________ at the checkout when I __________ a strange-looking man. A. waited/noticed B. was waiting/noticed C. waited/was noticing D. was waiting/had noticed 6. When Jack __________ me, I __________ a letter. A. was phoning – wrote B. phoned – has been writing C. phoned – was writing D. has phoned – was writing 7. Were they satisfied __________ they got the job? A. since B. when C. before D. after 8. John __________ here when he was twenty. A. lives B. is living C. lived D. had lived 9. While Diana __________ her favourite television programme, there was a power cut. A. watched B. was watching C. had watched D. is watching 10. Daisy __________ the buffet while I __________ to the drinks. A. prepared/ saw B. prepared/ was seeing C. was preparing/ was seeing D. had prepared/ saw