Don’t promise anything ________ you are one hundred percent sure．

A．whether

B．after

C．how

D．unless

The telephone________, but by the time I got indoors, it stopped．

A．had rung

B．was ringing

C．rings

D．has rung

－Shall I give you a ride as you live so far away?

－________．Thank you．

A．It couldn’t be better

B．Of course you can

C．If you like

D．It’s up to you．

________ computer games, his parents were very worried about his study．

A．Addicted to

B．He addicted to

C．His addicting to

D．Addicting to

So seriously ________ in the accident that he was sent to hospital at once．

A．he was wounded

B．was he hurt

C．he did injure

D．did he hurt

I wondered what difficulty he had ________ the plan?

A．to carry out

B．carrying out

C．carried out

D．with carrying out

When we climbed up to the top of the mountain, we were all ________．

A．out of the breath

B．short of the breath

C．out of breath

D．short of breaths

You should try to ________ new circumstances as quickly as you can

A．fit

B．suit

C．adapt

D．adapt to

Nobody wants to ________ especially in public．

A．make fun of

B．be made fun of

C．making fun of

D．made fun of

John has no difficulty making friends in any situations due to his ________ character．

A．selfish

B．hardworking

C．easygoing

D．shy