—Isn'tittimeyou

问题详情：

— Isn't it time you ________ to bed, Mike?

— I _____ painting all afternoon, so I have to finish my homework now.  

A. must go; have been practising        B. should go; have practised

  C. went; was practising               D. will go; had practiced

【回答】

C

知识点：一般过去时及其被动式

题型：选择题