1. I _______ for a very long time, so I _______ very angry with them. A. had been waiting - was B. have been waiting - was C. have waited - was D. have been waiting – am 2. I'm sad to think that all my plants _____ by the time I _______ from holiday. A. will die - return B. died - returned C. may have died - have returned D. had died - could return 3.Though world food production ________ since 1950 people still ________ from shortages in various parts of the world. A. has been doubing - may be suffering B. has doubled - suffer C. had been doubled - could be suffering D. has been doubled – suffers 4. For several years now she _______ as private secrectary to the bank manager. A. worked B. has been working C. was working D. works 5. In the past 50 years, that country _______ through 15 consitutions, I8 coups and 21 prime ministers. A. has been going B. goes C. were going D. has gone 6. She was still working a eight o'clock yesterday evening. She _______ since six o'clock in the morning. A. has worked B. has been working C. worked D. had been working 7. I _______the garage, but I couldn't find the brush to do that. A. am painting B. painted C. was going to paint D. have painted 8. Don't ring my cell phone at 2 p.m. I _______ the questons in the "Call me later." A. am going to answer B. will be answering C. will have answered D. have answered 9.When his bomb dismissed him from his job, he _______ there for ten years. A. was working B. worked C. had been working D. has been working 10.Rick _______ badly, so the coach decided to leave him out of my team. He was very sorry. A. isn't playing B. plays C. had been playing D. has played 11. He can't remember any of the bad habits he ________ when he was younger. A. had B. has had C. were having D. had had 12. A man _______ me to work three times this week, so I _______ him to the police. A. follows - am reporting B. has followed - have reported C. is following - reported D. followed- report 13 The weight of the melons _______ . A. might have varied B. were varied C. vary D. varies