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第1题

We could do nothing but () till he came back. A. to wait B.wait C.waiting D.waited
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第2题

I () to the hospital yesterday but l forgot all about it.。 A. had to go B. should have gone C. ought to go D.should
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第3题

The tobacco industry has been trying to improve its () A.image B.imagination C.imaginary D.imaging
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第4题

This tradition () over 200 years.. A. is dated back B.is dating back C.dates back D.has been dated back
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