The problem is ________ he can reach the target he has set before the competition．

A．if

B．whether

C．/

D．that

A large number of people think the truth has been covered up ________．

A．by chance

B．by accident

C．on purpose

D．for the purpose

It was true ________ the boy did surprised us．

A．that what

B．what that

C．that

D．what

Some students are seen doing ________ work they can find to support themselves．

A．whichever

B．no matter what

C．whatever

D．whenever

You may keep the book for one more week ________ no one else needs it．

A．provided that

B．so that

C．in order that

D．in case

Carl, who is a foreigner, has ________ our language after he lived here for some time．

A．got along with

B．looked forward to

C．caught on to

D．kept up with

The former manager of the company was said ________ in an organized crime．

A．to be involved

B．to involve

C．to have involved

D．to have been involved

It was owing to luck ________ judgement ________ the driver succeeded in avoiding an accident．

A．rather than; that

B．better than; when

C．other than; when

D．more than; which

Everyone in this country has the right to vote, ________ the color of their skin．

A．in terms of

B．as a result of

C．in the absence of

D．regardless of

These students asked the teacher if he would inform their parents ________ the result of the examination．

A．on

B．in

C．of

D．to