Peter likes reading a newspaper ________ he is having breakfast.

A. until              B. while              C. because          D. though

Bob promises to join in the football match ______ he has to help his parents on the farm.

     A. if         B. as                C. unless              D. when

Scientists say it may be a few years _____ it is possible to test the new medicine on patients．

    A. because    B. after    C．before   D. since

一Excuse me. Could you tell me    I call get to the Space Museum?

  一of course. You can take bus No.1.

  A. where    B. how    C. if  D. why

—Do you like playing tennis?

—No， ____ I like sports．I play football every Sunday

　　　 A．a(chǎn)nd　　 B. but　　　 C．so　　　 D. or

The teacher speaks very loudly  ______ all the students can hear her.

A. so that          B. because       C. since               D. when

 She had a stomachache     she ate something bad.

A. so               B. because              C. or           D. although

—What will Lucy do this Sunday? 

—She as well as her family ______ go camping by a small lake.

A. am going to                   B. is going to            C. are going to

Usually, we don’t know how important something is ______ we lose it.

         A. or                 B. until             C. as soon as

—Why didn’t Betty come to school yesterday?

—_________ she was ill.

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