用所给动词的正确时态填空.
It __is/ has been __(be) years since we _left___(leave) here.
since 引导的从句用一般过去时,主句用现在完成时,这里的has been 可以用is替换.
选择.
Mrs.Smith made her daughter __A____ for a long time.
A.wait B.waited C.to wait D.waiting
make sb do sth
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