The doctor told me to take the medicine ____.

   A.every four hours   B.four hours each   C.four each hour    D.every fouth hours

Like the Olympics, the World Cup takes place _____ years.

　 A. every four 　 B. each fourth C. each four 　 D. every fourth

The teacher said he needed _____ boys besides his students _____ the classroom. 

　 A. 20 other; clean 　    B. 20 more; to clean

　 C. 20 more; cleaning 　 D. another 20; clean

 By the time he was twelve he ______ a chemistry lab of his own.　 A. built 　 B. has built  C. had built 　 D. was building

Now that there are only a few minutes left, we’d better talk about the plan in _____.

　 A. short 　 B. secret C. all 　 D. general

 This kind of food doesn’t ______ me.

　 A. agree to 　 B. agree with  C. agree on 　 D. agree

Why haven't you finished your homework yet? You___________ to have finished it by last Sunday.

A. are supposed                  B. were supposed    

C. are supposing                 D. were supposing

Flight BA 123 to Vienna is now boarding at

 A. Gate 21    B. 21St Gate    C. the Gate 21    D. 21 Gate

Peter won't drive us to the station. He has___________ to take us all.

A. a very small car              B. too small a car

C. a too small car               D. such a small car

—You don't seem to be quite yourself today. What's wrong?

   —Oh, I'm suffering from a cold. Nothing serious,

   A. yet          B. indeed          C. though     D. anyway