(    )100. The boys always stays here for _________>

   A. one and half hour  B. one and half a hour 

C. one and a half hours  D. one and half hours

 (    )80. Could you _______ me your bike? Mine is broken. --Sure. It's there.

           A. borrow        B. lend          C. giving        D. return

 (    )60. He _________ harder this year than last year.

          A. study        B. studies        C. was studying   D. studied

 (    ) 40. This match made them ________at last.

        A. friendly      B. happily        C. quickly        D. slowly (    )

He had _________ much work to do that he couldn't go out.

          A. so           B. such           C. as             D. or

It was not until he came back _____ he knew the police were looking for him.

    A. which                    B. since

    C. that                     D. before

It was when she was about to go to bed ______ the telephone rang.

    A. since      B. as         C. that          D. then

Recently I bought an ancient Chinese vase, _______ was very reasonable.

    A. which price             B. the price of which      C. its price               D. the price of whose

 Whether you go or not, _______ is quite all right with me.

    A. that                 B. which      C. and it               D. so

Her sons, both of ______ work abroad, will come back home this summer.

    A. that                B. who             C. them                D. whom