1 . Visitors ______ not to touch the exhibits.

A．will request

B．request

C．are requesting

D．are requested

2 . His brother left home after the civil war broke out and _______since then.

A．is never heard of	B．never heard of
C．was never heard of	D．has never been heard of

3 . By the end of last month, the film named Hi,Mom ______ for 10 weeks consecutively.

A．has shown

B．had shown

C．had been shown

D．has been shown

4 . His car ______.This is the reason why he goes to work on foot.

A．is repairing

B．is being repaired

C．was repaired

D．has been repaired

5 . As more forests are destroyed, huge quantities of good earth ________ each year.

A．wash away

B．are washed away

C．is washed away

D．washed away

6 . It is suggested that a new bridge should ________ in front of the building to relieve the traffic stress.

A．construct

B．be constructing

C．be constructed

D．being constructed

7 . A new cinema________here. They hope to finish it next month.

A．will be building

B．is built

C．has been built

D．is being built

8 . So far, every possible method ______ to meet the highest possible standard.

A．has tried

B．is tried

C．has been tried

D．have been tried

9 . ---Your suit ______! Why?
---I got stuck in the rain.

A．has ruined

B．had ruined

C．has been ruined

D．had been ruined

10 . Over the past 3 years, more than one book about space exploration ________ all over the world.

A．were published	B．was published
C．have been published	D．has been published