问题
选择题
We would have called a taxi yesterday if Harold ________ us a ride home.[ ]
A. didn't offer
B. wouldn't offer
C. hasn't offered
D. hadn't offered
答案
答案：D
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We would have called a taxi yesterday if Harold ________ us a ride home.[ ]
A. didn't offer
B. wouldn't offer
C. hasn't offered
D. hadn't offered
答案：D