39. All these dictionaries are a great help to you, ______? A. are they B. aren’t they C. are all these dictionaries D. aren’t all these dictionaries ...

26. The president, accompanied by his assistants, ______. A. have arrived B. are arriving C. had arrived D. has arrived ...

14. The center of gravity of the human body ______ behind his joint. A. located B. locating C. to locate D. is located ...

36. The plane is scheduled to arrive ______ because of bad weather. A. lately B. late C. later D. latest ...

27. ______ the light of what you have told me, I will say that it is he who came here yesterday. A. By B. In C. Of D. Under ...

9. You’d rather watch TV this evening, ______? A. isn’t it B. hadn’t you C. wouldn’t you D. won’t you ...

2. Oil, exported from Iran to Europe, _____ by tankers. A. used to be transported/have been built up B. used to being transported/have built up C. was used to be transported/had been built up D. was used to being transported/will be bu...

9. We arrived ______ Professor Baker had already called the roll. A. so lately that B. as late that C. so later that D. so late that ...

29. There’s the doorbell; I hope ______ Tom. A. its B. it’s C. is D. he’s ...

7. Now that you _______ , what are you going to do? A. are bing returned B. have been returning C. have been returned D. have returned ...