-- What’s wrong with your pen?
-- The ink ___________ come out.
A. can’t B. won’t C. hasn’t D. doesn’t
The population of Africa is __________ so rapidly as to cause great concern of the whole world.
A. expanding B. stretching C. extending D. spreading
Living with a host family while studying abroad, in which there may be some other college students, __________ you the chance to learn more about the new culture.
A. give B. gives C. giving D. to give
Only after Li Qi focused on his strengths instead of his weakness ___________ himself from his inferiority complex（自卑感）.
A. he freed B. he had freed C. did he free D. had he freed
In Singapore, people who litter or dirty the street are most likely ___________.
A. to fine B. fined C. to be fined D. being fined
Joseph __________to evening classes since last month, but he still can’t say “What’s your name?” in Russian.
A. has been going B. went C. goes D. has gone
