问题
Reading books is very important for developing the students’ understanding of the world, ?[ ]
A: is it
B: are they
C: isn't it
D: aren't they
B: are they
C: isn't it
D: aren't they
正确答案是：
同类题型
“I hear Johnson was badly injured in theaccident” “_______ let‘s go and see him”
I don’t mind her criticizing me, but _____ is how she does it that I object to. [ ]
The book, which _____ children, became popular with adults.
She was about to go to bed when it suddenly _____ to her that she hadn’t turned off the gas.