The atmosphere of the earth ______ us from the strong sun light.

  A. prevents        B. keeps             C. stops        D. protects

--- Do you know _____ Mr. Black’s address is.

   --- He may live at No. 18 or No. 19 of Bridge Street. I'm not sure of _____.

A. what; which      B. where; which    C. where ; what     D. what; where

These books are not allowed ___ away.

A. to take   B. take   C. taking    D. to be taken

We had better not __ them busy all day long.

A. to keep    B. keeping   C. kept     D. keep

You don't like popular music.Just keep on ___ it for a week and you will enjoy ___ it surely.

A. hearing… listening   B. to listen… to hear   C. hear..listen    D. listening to..hearing

When we got to the top of the hill, the sun __

A.was shining  B.shone   C. has shone   D. shines

Where ___ you be this time tomorrow?

A. will    B.being    C.shall     D. do

It was _____ he came back from Africa that year _________ he met the girl he would like to marry.

A. when; then    B. not; until    C. not until; that    D. only; when

He once studied in Zhejiang University, ________he went abroad for further study.

  A. after which      B. where            C. in which           D. which

--- John failed his final exam.

   --- I’m not surprised at the news at all. _______, he is never seen busy with his lessons.

  A. Above all           B. In all                     C. First of all              D. After all