—If people make small changes, like taking buses instead of driving cars, it will make a big difference.

    —_____. Then the traffic will be much better.

    A. That’s all right              B. You are dead right

    C. I don’t quite agree               D. Oh, come off it

The thieves ran away as soon as the alarm _____.

    A. gave off    B. put off    C. showed off    D. went off

All the athletes competed _____ each other for gold medals in the Olympic Games.

    A. against    B. for    C. between    D. over

 All his free time is _____ by charity work, but he feels it meaningful.

    A. put up    B. given up    C. picked up    D. taken up

Bill Gates is so _____ that he has given away most of his money to charity.

    A. brave    B. smart    C. generous    D. skilful

 If the service is awful, a customer has the right to _____ to the manager.

    A. react    B. apply    C. complain    D. suggest

 It will take a lot of time and_____ to finish the task on time.

    A. power    B. pressure    C. struggle    D. energy

We’ll have our picnic in the place _____ most of us like best.

    A. where    B. which    C. who    D. as

My house _____ when you visited Beijing last time, so I didn’t invite you to my home.

    A. was being decorated       B. is being decorated

    C. has been decorated              D. was decorated

She had to drop out of school _____ her family couldn’t afford the cost of her education.

    A. although    B. unless    C. because    D. so