----- Nội dung dịch tự động từ ảnh -----
15. I saw Bob in a restaurant yesterday evening. He said he.....for his girlfriend there.
A. was waiting
B. had waited
C. had been waiting
D. waited
16. We usually go by train, even though the car.....is a lot quicker.
A. journey
B. travel
C. voyage
17. The threat of failing an exam provides the.....to work harder.
A. go-ahead
B. incentive
18. The explanation.....for the problems didn't satisfy anybody.
A. which gave
B. given
19. Don't you sometimes wish you.....invisible?
A. will be
B. could be
C. inspiration
C. having given
C. are
20. He turned on the TV,.....I thought was rather annoying.
A. and
B. so
C. that
D. trip
D. vitality
D. giving
D. would be
D. which