The roads have ________ because of people’s dependence on cars．

A．jammed

B．been jamming

C．to jam

D．been jammed

Green organizations are trying to save rain forests that have been ________ by farmers．

A．created

B．ruined

C．threatened

D．protected

After dinner he gave Mr Richard ________ ride to ________ Great Wall．

A．the; a

B．a; the

C．不填；a

D．不填；the

Mr．Smith didn’t understand ________ made his son so upset that evening．

A．what was it

B．why it was this

C．how that was

D．what it was that

Tom _________ in the library every night over the last three months．

A．works

B．worked

C．has been working

D．had been working

Although cats can not see in complete darkness, their eyes are much more ________ to light than human eyes．

A．brilliant

B．attractive

C．available

D．sensitive

There’re more than 100 elements found in nature, are metals．

A．most of which

B．most of them

C．most of that

D．most which

________ Father offers to us children is honesty and kindness．

A．Which

B．What

C．That

D．Whom

If they win the final tonight, the team are going to tour around the city ________ by their supporters．

A．being cheered

B．be cheered

C．to be cheered

D．were cheered

I stayed there for only two days but ________ felt like two weeks．

A．it

B．what

C．when

D．which