9)    A for         B by              C with            D as

10)   A compiled    B has compiled     C was compiling    D compiles

11)   A popularity    B population      C popular           D pollution

12)   A opportunities B chances        C opportunity       D chance

13)   A look up      B look after       C look for          D look to

14)   A write       B learn         C have pronounced     D pronounce

15)  A sentences   B words          C ways             D means

16)   A that           B them          C which         D the

17)   A as far as       B as quick as     C as long as       D as good as

18)   A do away with   B keep          C get rid of       D drop

19)   A instead of      B instead        C in the stead of   D replace

20)   A been spelling   B read           C spelled        D been reading

参考答案:

1--5ADCBA 
6--10CDBAA  
11--15 CBADB 
16--20 CADAC