— This returned Chinese scholar has become one of the top experts in this field.

— This returned Chinese scholar has become one of the top experts in this field.

题型:同步题难度:来源:
— This returned Chinese scholar has become one of the top experts in this field.
— Yes. I know him very well. He _____ in Africa with wild animals for eight years.
A. is working
B. had worked
C. worked
D. has been working
答案
举一反三
选词填空。
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go ahead,    by accident,    account for,    to be honest,    even if,
get into trouble,    be lost in,    do with,    take a chance,    be about to
— My English isn"t good.
— How many years ago ____ English?
[     ]
A. did you began to study
B. do you begin to study
C. have you studied
D. had you studied
When the old man ____ to walk back to his house, the sun ____ itself behind the mountain.
[     ]
A. started; had already hidden
B. had started; had already hidden
C. had started; was hiding
D. was starting; hid
— Ouch! You hurt me!
— I am sorry. But I ____ any harm. I ____ to drive a rat out.

[     ]

A. didn"t mean; tried
B. don"t mean; am trying
C. haven"t meant; tried
D. didn"t mean; was trying
— It"s many years since I saw you last. I _____ you at all.
— I wouldn"t have, either, if someone _____ you by the name.

A. didn"t recognize; hadn"t called
B. didn"t recognize; didn"t call
C. haven"t recognized; didn"t call
D. recognized; had called