4．Only when your identity had been checked________.

A．you are allowed in 　　　　　　B．you will be allowed in

C．will you allow in　 　　　　　　D．will you be allowed in

解析：选D。only+状语从句放于句首，主句用倒装语序。

3．________by keeping down costs will Power­Data hold its advantage over other companies.

A．Only 　　　　　　　　　　　B．Just

C．Still 　　　　　　　　　　　　D．Yet

解析：选A。only+介词短语结构。

2．Every one of us must know：________we live can we save the earth.

A．by changing the way only　 　　B．only by changing the way

C．by only changing the way　 　　D．by changing only the way

解析：选B。空格后为倒装语序，判定选项应为only+介词短语。

1．Only after my friend came________.

A．did the computer repair　 　　　B．he repaired the computer

C．was the computer repaired　 　　D．the computer was repaired

解析：选C。only+介词短语放于句首引起倒装，计算机的维修又属被动结构，故选C。

5．Doctors always________cigarette smoking to cancer.Do you think the idea makes sense?

答案：link

4．________，I would like to thank everyone who helped to make this event possible.

答案：In conclusion

3．Parents try to________their children’s bad habits.

答案：cure

2．Not having enough sleep for a long time always________illness.

答案：leads to

1．________listening to music，he has no other hobbies in his spare time.

答案：Apart from

5．The United States is trying to________(处理)the serious problems resulting from the energy crisis.

答案：handle