Dogs have a very good ________ of smell and are often used to search for survivors in an earthquake．

A．sense

B．view

C．means

D．idea

American Indian ________ about five percent of the U．S．population．

A．fill up

B．bring up

C．make up

D．set up

It is one of the funniest things ________ on the Internet so far this year．

A．finding

B．being found

C．to find

D．found

There are plenty of jobs ________ in the western part of the country．

A．present

B．available

C．precious

D．convenient

You ________ be hungry already－you had lunch only two hours ago!

A．wouldn’t

B．can’t

C．mustn’t

D．needn’t

________ that he was in great danger, Eric walked deeper into the forest．

A．Not realized

B．Not to realize

C．Not realizing

D．Not to have realized

－I’d like some more cheese．

－Sorry, there’s ________ left．

A．some

B．none

C．a little

D．few

Yesterday she sold her car, ________ she bought a month ago．

A．whom

B．where

C．that

D．which

－What’s that noise?

－Oh, I forgot to tell you．The new machine ________．

A．was tested

B．will be tested

C．is being tested

D．has been tested

Some children want to challenge themselves by learning a language different from ________ their parents speak at home．

A．what

B．that

C．which

D．one