22、There are two new buildings near the sea,  and________of them are very tall.

A.none            B.all           C.neither             D.both

21、Last Thursday when I got to the airport,   I________I had left my ticket at home.

A.forgot          B.realized      C.believed       D.seemed

20、He was so tired that he fell asleep________he went to bed.

A.as if        B.even though      C.ever since        D.as soon as

19、—May I use your dictionary?

—       

A. Never mind                B.  You are welcome

C. It doesn't matter         D. Certainly.   Here you are

18、Willie will learn swimming,  no matter how much it________.

A. costs      B.  takes      C. spends         D.  pays

17、If you want to do better in playing the piano,  you need more________

A.technology     B.practice     C.pleasure       D.challenge

16、The harder we work,  the________result we will get.

A.faster       B.fewer       C.better      D.smaller

15、Miss Zhao is very helpful.   She often helps us________we are in trouble.

A.whether       B.although        C.whenever          D.however

14、You must read the________carefully before taking the medicine.

A.news       B.pictures         C.numbers         D.instructions

13、I________my CD here and there,  but I still can't find it.

A.have looked for   B.look for   

C.will look for     D.was looking for