—What do you think of the two pairs of trousers?
—They don’t fit me well. They are _______ too long _______ too short.

A．not only; but also	B．both; and
C．either; or	D．neither; nor

In China and some other countries, it is impolite to speak loudly _______ you are having a meal.
A. before           B. while         C. after

We’ll go to the park to have s picnic ____ it rains.
A. if
B. unless
C. besides
D whether

Three years has passed _________ they came to this school.

A．since

B．for

C．when

D．before

To those disabled athletes, the most important thing is _______ win a gold, ______take part.

A．not only; but also	B．either; or
C．both; and	D．not to; but to

I got up late yesterday, ____ I had to take my breakfast with me on the bus.

A．and

B．but

C．or

D．so

Come on! You will catch up with others _______ you work hard.

A．if	B．unless
C．although	D．so

It's kind _______ Simon to give us _______ advice.
A. of; so many                     B for; such a useful
C. of; such useful                 D. for; so much

You can't watch TV _______ you finish your homework.

A．before	B．if
C．while	D．as

It’s snowing heavily outside. Put on your coat,_________ ,you’ll catch a cold.

A．and	B．or
C．though	D．but