Do you have any idea　　　that makes The Voice of China so popular?

A. what is itB. what it is

C. how it isD. how is it

Some of the people often ask the same question　　　the air has been polluted.

A. whether　B. ifC. thatD. where

He told me the information　　　everybody here could be paid well the next year.

A. wheneverB. whoever

C. thatD. whichever

(2013·贵州模拟)Tom, clean up the broken glass　　　someone walks on it.

A. since　　　B. when　　　C. before　　　D. as

　　　you told me in secret, I had heard nothing about it.

A. WhileB. Until C. After D. Since

Hardly　　　our walk when it began to rain.

A. we beganB. we had begun

C. had we begunD. has we begun

He was about to tell me the secret　　　someone patted him on the shoulder.

A. asB. untilC. whileD. when

—Have you known each other for long?

—Not very long, 　　　we started to work in the company.

A. afterB. beforeC. whenD. since

(2013·安徽高考压轴题)　　　, his idea was accepted by all the people at the meeting.

A. It might sound strange

B. As it might sound strange

C. As strange it might sound

D. Strange as it might sound

—Don’t look down upon Bob. He has his own advantages.

—Oh, yes. 　　　others are weak, he is strong.

A. IfB. Where

C. WhenD. Though