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        1. ----- Why is Mr . Yang still in the teachers’office ?
          ---- Maybe he _______ his work yet .

          A.doesn’t finish B.hasn’t finished
          C.haven’t finished D.won’t finish

          B

          解析試題分析:句意:為什么楊先生還在辦公室?也許他還沒(méi)有完成他的工作呢。由yet可知該用現(xiàn)在完成時(shí),所以選B。
          考點(diǎn):考查動(dòng)詞時(shí)態(tài)。

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