________ by the accident, the little girl burst into tears．

A．To be frightened

B．Frighten

C．Frightening

D．Frightened

The foreign teacher ________ with his students in the hall at present．

A．has been chatting

B．is chatting

C．has chatted

D．will chat

The days are gone ________ people can buy a house at a low price in China．

A．where

B．what

C．which

D．when

The reason ________ he gave for not going abroad is that he can not afford it．

A．which

B．what

C．how

D．why

The students came into the classroom, ________ their teacher．

A．follow

B．following

C．to follow

D．followed

Problems ________ happen when family members do not discuss with each other how they really feel．

A．can

B．must

C．should

D．ought to

The old ________ taken good care of in many areas of China．

A．is

B．has

C．are

D．have

________ around the Water Cube, we were then taken to see the Bird Nest for the 2008 Olympic Games．

A．Having shown

B．To be shown

C．Having been shown

D．To show

We are all able to live a green life．For instance, we can get something repaired ________ buy a new one．

A．other than

B．rather than

C．more than

D．less than

Regardless of the sign ________ “stop”, he intended to drive ahead but was prevented by a policeman．

A．telling

B．going

C．writing

D．saying