摘要： A. did B. should C. might D. would 训练题8 San Francisco is a big city which lies in the west of the United States very near the Pacific, where two earth's plates often meet and jump. So earthquake is a 1 word to hear there. It is recorded that at least 2 big earthquakes have happened in San Francisco since the beginning of the 3 century. One happened in 1906, the other in 1989. The second worst earthquake 4 San Francisco on the evening of October 17, 1989, when people were traveling to their 5 . A wide and busy overhead road fell onto the one 6 . Many people were killed in their cars. A few 7 ones were not hurt, but many thousands became 8 . A large number of weak buildings didn't 9 in the quake and the 10 electricity was cut off for several days, too.
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Only when _______ to explain _______ the reason for this.
A. did he start; she realized
B. he started; did she realize
C. did he start; she had realized
D. he started; had she realized
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I don’t think he could have done such a stupid thing last night, _____?
A. did he B. could he C. do I D. hasn’t he
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My grandfather would always read me a story when he came to visit us and I ___ enjoy it.
A. did use toB. used to C. would use to D. was used to
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