Only after spending several nights working on the math probl

Only after spending several nights working on the math problem to wonder whether the problem was wrongly set.
A.had he begun B.he began C.did he begin D.began he
KLSC 1年前 已收到1个回答 举报

caqer 幼苗

共回答了21个问题采纳率:81% 举报

C

only+状语位于句首要采用倒装,又因为叙述过去的事情所以用一般过去时态。句意:只有在花费数晚上的时间计算这道题之后他才怀疑是否问题出错了。

1年前

3
可能相似的问题
Copyright © 2024 YULUCN.COM - 雨露学习互助 - 16 q. 0.607 s. - webmaster@yulucn.com