It was not until dark　　   realized it was too late to return home.

    A. did he　　　　   B. when he　　  C. before he　　　　　　　　  D. that he

Never before 　　   such a beautiful garden.

   A. I have seen　　    B. have seen　　   C. have I seen　　　　　　　　 D. see

　　  appears to me 　　   the report must be true.

   A. That; it　　　　  B. It; that　　   C. As; that　　　　　　 D. This; as

Mary was waiting for the train on the platform 　　   she noticed an old friend of hers coming towards her.

   A. while　　　　  B. when　　　　   C. as soon as　　　　　　　　  D. after

There seems to be a party this evening,　　   ?

   A. doesn't it　　  B, isn't it　　    C. isn't there　　　　    D. doesn't there

He felt 　　   to work for human rights and progress.

   A. it his duty　　  B. his duty　　    C. that is a duty　　　　 D. that his duty

We can easily get from the computer 　　  has been on.

    A. that　　　　　　 B. which　　　　   D. anything　　　　　　   D. what

　　  difficult the task may be, we'll try our best to complete it in time.

    A. No matter　　　　  B. How　　　　　　 C. Though　　　　  D. However

There are three rooms in my house, 　　 serves as a kitchen.

A. the smaller of which　　　　 B. the small one of them

C. the smaller　　　　　　　　 D. the smallest of which

The man will have to wait all day 　　 the manager ends the meeting quickly.

    A. if　　　　   B. unless　　　　　　 C. until　　　　   D. though