题目内容

Could you tell me when you usually have______breakfast every day?

A. a
B. an
C. the
D. /

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I will give you______second chance if you promise to be careful to use the machine.

A. an
B. a
C. /
D. the

The old professor still worked hard when he was______.

A. in his seventy
B. in his seventies
C. in seventies
D. in the seventy

Shortly after the accident, ______police were sent to the scene to keep order.

A. dozen of
B. dozens
C. dozen
D. dozens of

The number of the students in our school is about four______. And ______of them are girls.

A. thousand; two thirds
B. thousands; two third
C. thousands; two thirds
D. thousand ; two third

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