1 . ________ seems strange to us is________ she can sing so many English songs beautifully.

A．What; that

B．It; why

C．That; how

D．It; that

2 . His father is stubborn. ________ he has made up his mind to do something, no one can change it.

A．While

B．Unless

C．Although

D．Once

3 . We had just begun to work________ the machine broke down.

A．when

B．as

C．while

D．after

4 . The new research ________ (预示着) that the seagulls staying here come from Spain.

5 . It _________ (发生)to him that he had left the bag on the train.

6 . Now we still don’t know whether life ________ (存在)on Mars. (根据汉语提示单词拼写)

7 . The biggest hobby in America, the one ____ which Americans spend most time, energy and money, is gardening. (用适当的词填空)

8 . Mr. Peter who is teaching us English is such a good teacher ______ we all like. (用适当的词填空)

9 . I went to Yunnan to visit many beautiful places last week. I think they are more magnificent than______.

A．expecting

B．expect

C．to expect

D．expected

10 . I will never forget the days _______we spent and the place _______ we stayed.

A．which; which	B．when; where
C．when: which	D．which; where