The research is so designed that once ___ nothing can be done to change it.

A. begins B. having begun C. beginning D. begun

I thought we’d be late for the concert，　　　 we ended up getting there ahead of time.?

A.but　　　　　　　 B.or　　　　　　　　 C.so　　　　　　　　 D.for

e found her greatly ___.
A. improving B. changed C. to help D. having disturbed

---We didn’t find the Blacks _____ the lecture.

--- No one had told him about ____ a lecture the following day.

A．a(chǎn)ttending; there being　　 B．to attend; there to be　

C．a(chǎn)ttended; there be　　　　 　　　　　　　　 D．a(chǎn)ttend; there was

When_____about his comments on the mine accident,the boss said much remained to be done to make it clear.

A.asking　　　　　 B.asked

C.being asked　　 D.to be asked

She says that she’ll never forget the time ________ she’s spent working as a secretary in our company.

A. which　　　　　　　　　　 B. when

C. how　　　　　　　　　　　 D. where

In many places in China, _______ bicycle is still _______ popular means of transportation.

A. a; the　　　 　　 B. /; a　　 　　　　 C. the; a　　　　　 D. the; the

Lily’s mobile phone was left in a taxi accidentally, never ______　　　　　　 again.

　　 A. to find　　 　　　 B. to be found　　

　　 C. finding　　 　　　 D. being found

The UN should 　　 the establishment of Iraqi government after the war, I think.

A. take part in　 　　　　B. play a leading role in

C. play a role among　　　 D. play a important part for