一、单选题（共 50 道试题，共 100 分。）V
1. To____ an entry visa is very difficult now.
A. appeal for
B. apply for
C. apply in
D. appeal in
满分：2 分
2. I am sorry____________ written you a letter at the time.
A. to have not
B. to not have
C. not to have
D. not having
满分：2 分
3. The problem of housing____________ lead to the problem of social instability.
A. itself
B. must
C. did
D. never
满分：2 分
4. Your shirt needs____________ . You'd better have it done today.
A. iron
B. to iron
C. ironing
D. being ironed
满分：2 分
5. Without the _______ of TV, children might spend more time reading and writing.
A. watching
B. concentration
C. show
D. distraction