201. Tom _____ into the house when no one.A.slipped; was noticing B.had slipped; noticedC.slipped; h

题目简介

201. Tom _____ into the house when no one.A.slipped; was noticing B.had slipped; noticedC.slipped; h

题目详情


201. Tom _____ into the house when no one     . 
A.slipped; was noticing B.had slipped; noticed
C.slipped; had noticedD.was slipping; noticed
题型:单选题难度:偏易来源:不详

答案

A

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