The girl sitting by the window is the only one of the students who ________ from the countryside in our class．

A．was

B．were

C．is

D．are

Most of them know they should cut down on fat, but knowing such a thing isn't of much help when it ________ shopping and eating．

A．refers to

B．comes to

C．speaks of

D．focuses on

________ some teenagers don't realize is ________ difficult life can be after they get addicted to drugs．

A．That; what a

B．That; how

C．What; what a

D．What; how

Thousands of years ago, the chair was ________ symbol of dignity rather than an article of ________ ordinary use．

A．a; the

B．a;/

C．the; an

D．the;/

I' m afraid we have to give up the climb and return to our camp．Our oxygen is ________．

A．running across

B．running out

C．running up

D．running over

The Lantern Festival, first ________ during the Han Dynasty, has a history of more than 2,000 years．

A．celebrating

B．to celebrate

C．celebrated

D．having celebrated

Galileo found ________ how many times he tried the experiment, the result remained the same．

A．that

B．whether

C．that whether

D．that no matter

I don't think they can finish the project before summer, ________?

A．do they

B．don't they

C．can they

D．can't they

His new house is located near the lake, in the middle of ________ there is a beautiful hill．

A．that

B．it

C．which

D．what

________ the job applied for, he decided to give up and start his own business．

A．Having not received

B．Not having given

C．Not having been received

D．Not having been given