___________, I have to put it away and focus my attention on my homework.

We have no idea at all________.
A. where did he go            B  where he has gone       
C. which place he has gone     D.  where has he gone

____________, the car stopped all at once.

— Kingston was late for class this morning again.
— You know, _________.

While building a tunnel through the mountain, ________ .

A．an underground lake was discovered

B．there was an underground lake discovered

C．a lake was discovered underground

D．the workers discovered an underground lake

The purpose of the research had a more different meaning for them than ________.

Last year many well-known singers did everything _______ help the people in the tsunami-hit countries. 

He’s looking for a new job, one _____ he can get more money to support his family.

Eat any cake you like and leave the others for ______ comes in late.

Are there any restaurants in Beijing _____ authentic Mexican food?