问题描述：
1.My teacher______at school last Friday.A.didn't B.wasn't C.doesn't D.isn't
1.My teacher______at school last Friday.A.didn't B.wasn't C.doesn't D.isn't 2.My cousin______me for dinner yesterday.A.call B.calls C.called D.calling
1.My teacher______at school last Friday.A.didn't B.wasn't C.doesn't D.isn't 2.My cousin______me for dinner yesterday.A.call B.calls C.called D.calling
问题解答：
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