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In this country, coal      electricity.

A．used to produce            B．is used to produced

C．is used to producing                   D．is used to produce

       You stepped into the lab with your shoes on? You’re _______ to take them off before you enter it.

       A. invited       B. supposed    C. forbidden   D. permitted

       He _______ cards with his friends, but now he _______ a walk after supper.

       A. used to play; is used to having  B. is used to playing, used to have

       C. used to play; is used to have     D. is used to playing; is used to have

Students used to_____ information from newspapers or magazines, but now they are used to ______ for it on the Internet directly.

A. get; search  B. getting ; search   C. getting ; searching  D. get; searching

— Tom, what a pity! I almost succeeded yesterday.

   —_______. I told you to be careful before.

A. One false step will make a great difference        B. Where there’s life, there’s hope

C. Never put off till tomorrow what you can do today  D. One tree does not make a forest

You’d bett er have your room _____. It’s _______.

clean ;in mess             B. cleaned ; a mess  

cleaned ; in mess           D. clean ; in a mess

I always can’t help ______ people in trouble a hand. But I’m very busy today that I can’t help ______the work with you.

        A. to give; to do   B. giving; doing     C. give; do     D. giving; do

It is _____ of time and money to build such a hotel in this small town.
A. a waste     B. the waste                C. unnecessary             D. worth

— Shirley won the first prize in the English speech contest.

   —Woo! ________ she has made since the beginning of this term!

A. What great progress              B. How great progress

C. What a great progress             D. How great a progress

Some researchers believe that there is no doubt ____ a cure for AIDS will be found.

   A. whether     B. what    C. which     D. that