题目内容
He's worked there since 1978, ________ ?
[ ]
A．isn't he
B．hasn't he
C．doesn't he
D．wasn't he
答案：B
解析：
解析：
|
因为句中的时态是现在完成时，所以 He's，不是He is 的缩写而是He has的缩写，所以选B. |
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