单项选择题

--I posted the package a week ago.
--Then they （） the package by now. It usually takes 5 days.

A. must received
B. can have received
C. ought to have received
D. should received

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单项选择题
It is in this factory （） I worked for ten years.

A. where
B. what
C. do
D. that
单项选择题
--Which one can I take--You can take （） of them. I'll keep none.

A. all
B. both
C. any
D. either
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