(   ) 13. You should make it a rule to leave things       you can find them again.

A. when    B. where C. then    D. there

(   ) 12. She found her calculator      she lost it.

A. where    B. when C. in which    D. that

(   ) 11. Someone called me up in the middle of the night, but they hung up(掛斷)      I

could answer the phone.

A. as    B. since C. until    D. before

(   ) 10. ______ he isn't rich enough, he often gives away money to poor children.

A. Though    B. When C. Because    D. If

(   ) 9. I usually sleep with the window open       it's very cold.

A. until    B. unless C. as    D. if

(   ) 8. If you don't go to the meeting tomorrow, __________.

A. he will,too B. he won't,either

C. he does,too D. he doesn't,either

(   ) 7. My grandma didn't go to sleep       I got back home.

A. where    B. until C. as soon as    D. while

(   ) 6. ―The little boy__________finished drawing is called Jack.

     ―What a clever boy！

A. who has    B. whom has C. which has    D. what has

(   ) 5. You can't catch up with a car       how fast you run.

A. however    B. no matter C. although    D. whatever

(   ) 4. My brother broke the MP'3      he bought yesterday.

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