题目内容
—Take a cigarette, please.
—No,thank you. It's two years since I ________.
[ ]
A.didn't smoke
B.had a smoke
C.do not feel like smoking
D.have smoked
答案:B
解析:
解析:
|
导解:it be+time+since从句结构中,从句不用否定式,延续性动词用瞬间时态表示“有多长时间没有做某事”. |
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