问题

It has been proved________violence on television has a bad effect on the development of children.[ ]

A:whether
B:because
C:when
D:that

正确答案是：

同类题型

Would you mind ___________ the door for me—Of course not.

_______ email is becoming more popular with many people, I still like writing to my friends.

My father was against my suggestion whilemy mother was ________ it.

What do you think ________her ________that night

If you the library book，you wilt have to pay for it．