It is three years his father smoked . A when B after C since D while
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It is three years_____ his father smoked .
A when B after C since D while
试题答案
C
解析:
这是固定句型：It’s + 时间+ since …
It is three years_____ his father smoked .
A when B after C since D while
C
解析:
这是固定句型：It’s + 时间+ since …