题目内容

It seemed that the old man ______ for something over there.

A. looks
B. looked
C. was looking
D. has looked

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He was sure that he ______ his wallet in the office.

A. left
B. would leave
C. had left
D. has left

You must study hard if you ______ want to fail the exam.

A. won’t
B. don’t
C. haven’t
D. hadn’t

"I’m afraid you can’t sit here." "Sorry, I ______ know."

A. don’t
B. can’t
C. won’t
D. didn’t

Over the past 16 years, the population of the Amish People _____ to 230,000 with roughly 5 children per family.

A. had nearly doubled
B. has nearly doubled
C. nearly doubled
D. has nearly been doubling

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