—The light in the office is still on.

—Oh，I forgot ________.

A. turning it off B. turn it off

C. to turn it off D. having turned it off

The boy is only five years old，but he is quite used _____ the telephone．

A．to answer     B．to answering      C．of answering      D．by answering

There was no news； ＿＿＿＿, she did not give up hope.

A. moreover     B. therefore  C. but     D. nevertheless

The railway was opened＿＿＿＿＿＿traffic＿＿＿＿＿＿＿ April 4, 1985.

A. to； on     B. to； in     C. by； on     D. for； on

One＿＿＿ five will have the chance to join in the

game.

A. within     B. among     C. in     D. from

—— Can Li Hua help me with my English?

—— I regret to tell you her English is＿＿＿＿＿yours.

A. as good as     B. no more than  . no better than     D. as much as

It was not until then that I came to know that knowledge ___ only form practice.

      A. had come     B. has come    C. came     D. comes     

Shortly after the accident, two＿＿＿police were sent to the spot to keep order．

A．dozen of B．dozens  C．dozen D．dozens of

Many people agree that＿＿＿knowledge of English is a must in＿＿＿international trade today．

A．a(chǎn)； ／         B．the； an     C．the； the       D．／； the

Someone is ringing the doorbell. Go and see ＿＿＿＿＿＿.

A.who is he     B.who he is

C.who is it     D.who it is