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6. --- Each of the students, working hard at their lessons, ______ the book.
--- So have I.
A. is reading B. has read C. reading D. reads
7. The baby is generally healthy, but every now and then he ______ a cold.
A. has caught B. is catching
C. will catch D. does catch
8. It is when the plane ______ that you’d better find out at the booking office.
A. would take off B. had taken off
C. was taking off D. is taking off
9. --- I’m sorry, but there’s no smoking on this flight.
--- Oh, I ______ that. Sorry, I won’t again.
A. don’t know B. didn’t know
C. won’t know D. haven’t known
10. I thought Jim would say something about his school report, but he ______ it.
A. doesn’t mention B. hadn’t mentioned
C. didn’t mention D. hasn’t mentioned
参考答案
1-5 CDBCB
6-10 BDDBC
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