1 . Due to the light pollution, stars are too faint _________with naked eyes in the urban area.

A．observing	B．being observed
C．to be observed	D．to be observing

2 . It is more important than ever to develop one’s maths, science and computer skills _______technological change is accelerating.

A．though

B．unless

C．until

D．because

3 . ______ patient when you argue with someone who is not so reasonable.

A．Be	B．Being
C．To be	D．Having been

4 . Charles entered New York University in 2009 and one year later       to University of London as an exchange student

A．sent	B．had sent
C．was sent	D．had been sent

5 . Tom's worry is      he won't be chosen for the school football team.

A．that

B．whether

C．when

D．why

6 . 1 think we'd better keep to the subject,       we'11 waste our time．

A．and

B．or

C．but

D．so

7 . --Your phone number again？I _____quite catch it．
-- It’s 9568422．

A．didn’t	B．couldn’t
C．don’t	D．can’t

8 . The news came as no surprise to me. I _____ for some time that the factory was going to shut down.

A．knew	B．had known
C．have known	D．know

9 . －The fire in the supermarket last night was terrible !
—They      have taken some measures to prevent it occurring．

A．must

B．will

C．would

D．should

10 . During the weekend, the health club is usually full of people     to get in shape

A．try	B．grew
C．trying	D．having tried