单项选择题

Nobody but Sam and Tom______in the lab.

A) are
B) have been
C) were
D) is

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单项选择题

This year we will produce______they did last year.

A) as twice many cars as
B) twice as many than cars
C) twice as many cars as
D) cars twice many that

单项选择题

I shall have a roommate in the house after all these______years.

A) single
B) alone
C) sole
D) lonely

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