(单选题)33: The reason for his being late is _____ he didn’t catch the early bus. A: why B: because C: that D: where ...

(单选题)15: There are many kinds of metals, ______. A: each having its special properties B: having its special properties C: one has its special properties D: each has its special properties ...

(单选题)9: I suddenly _____ an insect crawling up my leg. A: felt B: was feeling C: was felt D: was being felt ...

(单选题)3: Having worked for three hours or so they stopped ____ a rest. A: taking B: to take C: having D: having take ...

(单选题)47: Every means ______ been tried ever since the machine broke down. A: has B: have C: are D: is ...

(单选题)41: The man in the corner confessed to _______ a lie to the manager of the company. A: have told B: be told C: being told D: having told ...

(单选题)35: While they were having afternoon tea, he was invited to ___________ for dinner. A: stay B: remain C: sit D: keep ...

(单选题)29: He could not help ____ that something bad would happen. A: to think B: think C: thinking D: being thinkings ...

(单选题)23: Jimmy insisted that the work ______ by the middle of June. A: will be finished B: is finished C: be finished D: may be finished ...

(单选题)17: Nothing can _____________ the friendship we have shared all these years. A: be equal to B: be as equal as C: equal to D: equal ...