The boy said ________ couldn't he work out the problem but his teacher didn't know how to do it.
A. though B. never C. hardly D. not only
The boy said ________ couldn't he work out the problem but his teacher didn't know how to do it.
A. though B. never C. hardly D. not only
D
not only…but(also)句型中,not only提前句子倒装。