动词的时态
　　
　　1 What happened to Tony ？
　　
　　He stepped on a nail while he _____ in the yard .
　　
　　A was running   B is running   C runs   D had run
　　
　　2  I _____ any of Picasso's paintings before I visited the art museum .
　　
　　A had never seen   B will never see   C have never seen   D would never see
　　
　　3 I had a discussion with Mr. Baker and hoped he _____ us an early reply .
　　
　　A would give  B give  C gave   D had given
　　
　　4 Everything _____ if Albert hadn't called the fire department immediately after the fire broke out .
　　
　　A would destroy                           B would have destroyed
　　
　　C would be destroyed                      D would have been destroyed
　　
　　5 The last time I ______ her ， she ______ at a medical college.
　　
　　A was visiting ； studie               B visited ； studies
　　
　　C visited ； was studying              D was visiting ； was studying
　　
　　6 Sorry ， I'm a little bit late.
　　
　　Oh， I _____ here just a few minutes.
　　
　　A have been   B had been    C am   D will be
　　
　　7 Health experts in many countries still ______ their ideas about the relationships between our food and our health .
　　
　　A have tested   B tested    C are testing    D test
　　
　　8 He has already gone home . But before he left ， he _____ all the mistakes in his translation.
　　
　　A had corrected   B has corrected   C corrected    D would correct
　　
　　9 We ______  a walk when it started to rain .
　　
　　A take   B took   C are taking    D were taking
　　
　　10 A lot of buildings _____ and the place _____ very noisy ever since we moved here .
　　
　　A have been built； has become                 B have been built； became
　　
　　C were built ； has become                     D were built ； became

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