I'm afraid I'm not ________ to help with the show, for I am fully occupied with my own project．

A．dependable

B．convenient

C．available

D．accessible

Many lifestyle patterns do such ________ great harm to health that they actually speed up ________　________ weakening of the human body．

A．a;/

B．/; the

C．a; the

D．/;/

Last week I took the Civil Service Admission Examination, for which I ________ for nearly three months．

A．had prepared

B．would prepare

C．was preparing

D．have been preparing

If you want to book tickets for the 2012 Olympic Games, just call 00952012．It ________ be simpler．

A．mustn't

B．shan't

C．needn't

D．couldn't

Would you be kind enough to help the boy ________ Chinese is really hard to learn?

A．who

B．whose

C．for whom

D．from whom

________ in the library regulations that any book borrowed be returned by due time, or the borrower will be fined．

A．What is required

B．It is required

C．As is required

D．Which is required

I appreciate ________ the opportunity to work in your company two years ago．

A．giving

B．to give

C．being given

D．to be given

________ economic, political and cultural differences, it is difficult for China and America to fully understand each other．

A．Apart from

B．Regardless of

C．On account of

D．In terms of

Disadvantages as they have, online games never fail to ________ a large number of teenagers．

A．appeal to

B．object to

C．refer to

D．turn to

Drunk driving used to occur ________ , but now it is under control．

A．frequently

B．generally

C．practically

D．gradually