问题

Only when the data again that there was a mistake. [ ]

A: they had studied; did they realize
B: they had studied; realized they
C: had they studied; did they realize
D: had they studied; realized they

正确答案是：

同类题型

The number of teachers in our college _____ greatly increased this term. A number of teachers in this school _____ from the countryside.

下列各句中，没有语病的一句是

_________ one has a child will one realizehow great one’s parents are.

Qingdao is a good place for summer vacation. My father___________ there several times.

Let’s go skating after school——_____ Call for me at any time