( ) 21. I’m very busy these days, because I have a lot of problems to _______ .
A. agree with B. deal with
C. keep up with D. come up with
( ) 22. _______ the teachers in their school is 300 and ______ of them are women teachers.
A. A number of； the number of B. A number of； a number of
C. The number of； a number of D. The number of； the number of
( ) 23. You can’t imagine ______ difficult the road ______ success is.
A. what； to B. how； to C. what； of D. how； of
( ) 24. Mrs Smith is _______ good a teacher _______ she always makes her class interesting.
A. so； that B. such； that
C. so a； that D. such a； that
( ) 25. Excuse me, could you tell me how ______ the library
A. to find B. can I find C. find D. finding
( ) 26. He _______ go out with his parents, but now he ______ staying at home alone.