If anyone happens to drop in while I am out, _________ him or her leave a message.
A. have B. get C. ask D. tell
With a lot of problems __________, the new government is now having a hard time.
A. settling B. to settle C. settle D. having settled
Though I’ve tried very hard to improve my English, by no means ___________with my progress.
A. the teacher is not satisfied B. is the teacher not satisfied
C. the teacher is satisfied D. is the teacher satisfied
Science and technology have in important ways __________ the improvement of agricultural production.
A. contributed to B. resulted from C. carried off D. handed over
Mr. Han, my neighbor, is always helping those who are in trouble without expecting anything __________.
A. in turn B. in return C. in detail D. in addition
He is very sick. I insist that a doctor __________ immediately.
A. has been sent for B. sends for C. will be sent for D. be sent for
