-He has to finish the experiment today. He must be in the lab, ____ ? -That's quite possible.
A.mustn't he B.won't he C.doesn't he D.isn't he正确答案D
-He has to finish the experiment today. He must be in the lab, ____ ? -That's quite possible.
A.mustn't he B.won't he C.doesn't he D.isn't he正确答案D