-When ____ you return the dictionary to me??

-Only when I ____ you next Sunday.?

　 A. will；see 　 B. do；will see  C. will；will see 　 D. do；see

-Has Tommy finished his homework yet??

-I have no idea； he ____ it this morning.

　 A. was doing 　 B. had been doing C. has done 　 D. did

-Do you think we can get there on time?

-Yes，_______ the truck doesn’t break down.

　 A. even if 　 B. unless   C. until 　 D. so long as

He’s got himself into a dangerous situation _____ he is likely to lose control over it.

A. where       B. which       C. while    D. why

—I'll be away on a business trip. Would you mind looking after my cat？  

—Not at all. _____ . 

A. I've no time    B. I'd rather not     C. I'd like it     D. I'd be happy to

_____ is known to all, paper was first made in China. 

A. It    B. That     C. Which     D. As

He said French is the most beautiful language in the world and _____ he was determined to learn it well. 

A. ／   B. that    C. also    D. besides

The writer and professor, whom I often refer to at the meetings, ____ famous for those works. 

A. is    B. are    C. am    D. were

Madame Curie, for _____ life had once been very hard, was successful later. 

A. whom    B. which    C. whose    D. that

After describing the planned improvements, she went on _______ how much they would cost.

A. to explain   B. explaining  C. to be explaining       D. having explained