－I doubt whether they will arrive on time．

－I think they can ________ they don’t get caught in a traffic jam．

A．as far as

B．unless

C．as long as

D．although

It is the year we spent together at college ________ has a deep effect on my life．

A．which

B．that

C．when

D．where

Try harder ________ you will win a ticket for the 2008 Olympic Games．

A．but

B．and

C．or

D．so

－I couldn't find David anywhere．

－Well, he ________ have gone far-his coat's still here．

A．shouldn't

B．mustn't

C．can't

D．wouldn't

Tim is absent from school．That is ________ he was badly hurt in the football game．

A．because

B．why

C．how

D．when

－Please hand in the paper between 9 and 10 o’clock tomorrow．

－Sorry, I ________ a meeting at that time．

A．attend

B．have been attending

C．will be attending

D．was attending

The aim of the program is to educate ________ public about the dangers of smoking．

A．the; the

B．不填; the

C．the; 不填

D．不填;不填

It is generally considered unwise to give a child ________ he or she wants．

A．however

B．whatever

C．whichever

D．whenever

Changes ________ in this city over the past five years．

A．were taken place

B．have taken place

C．took place

D．have been taken place

His late wife had belief ________ the idea that children are everything．For this, he set ________ a school in his hometown ________ memory of her．

A．in, up, in

B．of, off, in

C．in,up, for

D．for, up, in