The visiting professor asked the students they found most difficuit in learning English.
问题描述:
The visiting professor asked the students they found most difficuit in learning English.
A.whether B.where C.what D.how
在they前面有一个空格。我知道选什么但该如何解释,明天轮到我来讲课
答
C追问见补充what引导的从句作宾语