Our country ______ a lot in the last fifty years.[ ]A. will change B. cha

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Our country ______ a lot in the last fifty years.[     ]
A. will change
B. changed
C. changes
D. has changed

答案

举一反三

—______ you ______ to see that exhibition yet?
—Yes, I ______ it last Sunday.[ ]

A. Did, go; saw
B. Have, gone; saw
C. Did, go; seen
D. Have, gone; went

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Over the years, we _____ each other a lot and got good friends. [ ]
A. are helping
B. have helped
C. will help
D. help

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Amy ____the windows already, so the room looks much bright. [     ]
A. cleans
B. has cleaned
C. is cleaning
D. will clean

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－I"m sorry to keep you waiting.
－Oh, not at all. I ____here for only a few minutes. [     ]
A. was
B. is
C. have been
D. had been

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Fu Mingxia _____ a lot of gold medals since 1996.[     ]
A. wins
B. won
C. is winning
D. has won

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