题目内容

Our teacher ____ in our school for 29 years and he ____ here when he was 23 years old.
A.has taught has comeB.taught , comes
C.taught , cameD.has taught, came
D解析:
考查时态。 前半句中有“for 29 years”故第一空用现在完成时,而后半句中有when 引导的时间状语,因此第二空用一般过去时came.
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