7. Never_______faith in himself, the scientist went on with his research.
A. losing B. to lose C. lost D. to be lost
6. This is one of the problems__________at the meeting next week.
A. discussed B. discussing
C. being discussed D. to be discussed
5. By sunset, we had __________thirty miles.
A. covered at B. covered for
C. covered D. covered of
4. I can’t remember _________it was five o’clock _____he arrived.
A. whether; when B. that ; that
C. whether ; that D. that ; when
3. Are you sure the trees can ________the coming cold winter ?
A. survive B. pass C. overcome D. live
2. The first textbooks _________for teaching English as a foreign language came out in the 16th century.
A. having written B. to be written
C. being written D. written
1.The castle ________to the 14th century.
A. dates from B. dates back
C. dates at D. dates in
20. His parents didn’t have enough money to ________his higher education.
A. pay B. pay for C. pay off D. pay back
Unit 20
19. Hope _______the best ; prepare_______the worst.
A. for; / B. / ; for C. for ; for D. with ; with
18. My friend Bob often comes to the island _________ .But this time he was buried _______because of a hurricane.
A. by sea; in sea B. by the sea; on sea
C. by sea ; on sea D. by the sea ; at sea