单项选择题

You () not have seen her yesterday, for she was abroad.

A. must
B. should
C. could
D. would

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单项选择题

My father has classes () day: Mondays, Wednesdays and Fridays.

A. each other
B. every other
C. this and the other
D. all other

单项选择题

Adam Smith mentioned the number 4, 800 in order to().

A. show the advantages of the old labor system
B. stress how powerful the individual worker was
C. show the advantages of the division of labor
D. stress the importance of increased production