1. I’m afraid there’s no more bread. We ____ (eat) it all last night. In any case, it ________ (go) stale.
2. In most countries, the law on organ transplantation is poorly defined, as legislation ________ (not create) to cope with this advance in surgery.
3. Until last year, the enlargement of general knowledge on the part of the students ________ (understand) by part of the high school teachers.
4. You are in the middle of a conversation with a friend, and suddenly she burst out laughing, making you think you’ve made a brilliant joke. But then she says, “Sorry, I ________ (not laugh) at you, I just saw something really funny on a micro blog.”
5. –Where have you been all the time? The plane is about to depart.
--I’m so sorry, but I ________ (think) you ________ (be) at the information desk.
6. Your assignment looks great! You did it on your computer. ________ Mr. Sawyer ________ (not tell) us we had to write it in our school?
7. Once environmental damage ________ (do) by animals or plants from foreign lands, it takes many years for the existing system to recover.
8. I ________ (just start) back for the house to change my clothes when I heard voices downstairs.
9. When she came to the last name on the list in the attendance book, she noticed that he ________ (be) absent for over a week.
10. Billy, my neighbor down the street ________ (always talk) about politics as if he ________ (be) a great figure. Actually he knows nothing about it.
11. Mr. Reynolds, ________ angry; you’d better not say another word.
A. I’m to get getting
B. I’m about to get C. I’d got D. I’ve been
12. The sports commentator: The home team ________ (just score) a point, and the fans ________ (cheer) wildly.
13. College graduates without working experiences ________ (lose) appeal for international corporations, which are turning to returned students from overseas universities.
14. I ________ (call) David for the past half hour, but I ________ (keep) getting a busy signal.
15. The friendly insurance agent ________ (call) at my office fruitfully two or three times a week to sell his various types of insurance policies.
16. By the late 1970s, many shopping malls _________ (develop) into small cities themselves.
17. Competition for admission to the country’s top private schools ________ (always be) tough since few public schools can compare favorably with private schools.
18. The streets in this part of the city ought to be cleaned twice a day, but we will be lucky if they ________ (clean) once a week. What a mess!
19. Children need risks and need to experience successes and failures if they ________ (grow)
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