Chọn phương án đúng (A hoặc B hoặc C hoặc D) để điền vào chỗ trống trong đoạn văn sau: Choose the letter (A, B, C, D) that corresponds to the correct answer.


Dear Sir, I am writing to you because I __________ (31) my case. I __________ (32) it on the seat of the 8.30 bus from Station to Rosedale this morning. After I__________ (33) the bus, I suddenly __________ (34) leaving it and I __________ (35) back to the bus. However, it __________ (36) no longer on the seat and no one __________ (37) anything about it. I __________ (38) the principal of my college but no one __________ (39) the missing case yet. I __________ (40) the case for three years and I __________ (41) it a lot. I __________ (42) to hearing from you as soon as possible. I can call at the bus station on Tuesday to collect the case.
31.
A. was losing
B. had just lost
C. lost
D. have just lost
32.
A. left
B. have left
C. leave
D. had left
33.
A. get off
B. got off
C. was getting off
D. had got off
34.
A. had remembered
B. remember
C. have remembered
D. remembered
35.
A. am running
B. was running
C. have run
D. ran
36.
A. was
B. had been
C. is
D. has been
37.
A. knew
B. had known
C. have known
D. know
38.
A. already told
B. already tell
C. have already told
D. had already told
39.
A. handed
B. has handed
C. was handing
D. had handed
40.
A. had had
B. was having
C. had
D. am having
43.
A. are paying
B. will pay
C. paid
D. pay
44.
A. have been
B. are
C. were
D. will be