I’msorry,Ireallydon’tknow        theclock.     A.tomend...

问题详情：

I’m sorry, I really don’t know         the clock.

      A. to mend                   B. how should I mend

      C. what to mend              D. how to mend

【回答】

D

知识点：非谓语动词

题型：选择题