题目内容

----- Why is Mr . Yang still in the teachers’office ?
---- Maybe he _______ his work yet .
A．doesn’t finishB．hasn’t finished
C．haven’t finishedD．won’t finish
B

试题分析：句意：为什么杨先生还在办公室？也许他还没有完成他的工作呢。由yet可知该用现在完成时，所以选B。
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