—Isn'tittimeyou

問題詳情：

— 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

知識點：一般過去時及其被動式

題型：選擇題