The workers were made ________ ten hours a day．

A．work

B．to work

C．working

D．worked

The reading room ________ yesterday afternoon．

A．cleaned

B．is cleaned

C．was cleaning

D．was cleaned

So far, the moon ________ by man already．

A．is visited

B．will be visited

C．has been visited

D．was visited

Students ________ smoke when they are at school．

A．don't allow to

B．are not allowed to

C．are not allowed wear

D．are not allowed wearing

________ strange type of work it was to fish with birds!

A．What

B．How

C．What a

D．What an

The boy was ________ by the ________ movie．

A．frighten; frightening

B．frightened; frightened

C．frightened; frightening

D．frightening; frightening

Although he is an ________ man, he is still active at work．

A．older

B．olderly

C．elder

D．elderly

I'm sorry to hear that the girl ________ home for 2 days．

A．left

B．is away from

C．has left

D．has been away from

Great changes ________ in Shenyang during the past ten years．

A．have happened

B．have been happened

C．happened

D．was happened

They ________ friends since they met in Shanghai．

A．have made

B．have become

C．have been

D．have turned