Scientists say it may be five or six years _____ it is possible to test this medicine on human patients.
A.since | B.after | C.before | D.when |
II.单项填空(共15小题;每小题1分,满分15分)
21.---I’m afraid I must be off now .
--- ____________________ .
A.No problem | B.Never mind | C.Step slowly | D.See you soon. |
40. Who do you know Dora is going to _____ ?
A.get married | B.marry to | C.marry with | D.marry |
39. –Did you _____ your sister when you were in Shanghai?
--No. But I _____ my uncle’s during my stay there.
A.call on, called on | B.call at, called at | C.call on, called at | D.call at, called on |
38. –How does his explanation _____ to you?
--Well, quite reasonable and acceptable.
A.look | B.feel | C.come | D.Sound |
37. The little girl cried _____ she saw the dog.
A.every time when | B.at each time | C.immediately | D.at the moment |