1. My sister spends ____ studying so that she might later get a better job.

[A]most of her times        [B]her most times

[C]her most time            [D]most of her time

2. We got down to business as soon as we ____ each other.

[A]had introduced to     [B]had been introduced to

[C]had introduced by     [D]had been introduced by

3.The scientist suddenly saw the answer to the problem that ____ his mind for the last two months.

[A]is occupied      [B]has been occupied

[C]had occupied     [D]had been occupied

4.If had realized that you were really serious in what you said ， I____ more carefully.

[A]thought it over     [B]had thought over it

[C]would have thought over it     [D]should have thought it over

5.You are so busy recently. I do wish you ____ with me for a while.

[A]could stay      [B]stay

[C]will stay       [D]will be staying

6.The platform ____ with people ____ goodbye to friends and relatives.

[A]was crowded, have waved     [B]crowded, waving

[C]was crowded, waving         [D]crowded, have been waving

7.____Paris,Mr.Blake is making preparations for the trip.

[A]Having invited to visit    [B]Having been invited to visit

[C]Having invited visiting    [D]Having been invited visiting

8.Everything that can be done has been done,____?

[A]can't it    [B]can it      [C]hasn't it       [D]has it

9.It's pity you weren't at the meeting to hear ____ this problem.

[A]what do other people think about

[B]what other people thought about

[C]that other people thought about

[D]that did other people think about

10.Professor Smith always works hard in spite of ____ he is not is 　 in good health.

[A]the fact that    [B]the fact what

[C]that             [D]what

11.My favorite talk show host,____ program is on every afternoon, just made a new movie.

[A]whose    [B]who's     [C]his     [D]he's

12.I haven't yet had time to think over the proposals ____ at the last meeting.