单项选择题

"Have you ever gone water-skiing before""Oh,yes（）."

A．a dozen of time
B．dozens of times
C．dozens of time
D．dozen of time

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单项选择题
Do you want to wait Three weeks（）too long for me to wait.

A．is
B．are
C．were
D．was
单项选择题
That magnificent（）temple was constructed by a famous architect.

A．eight-centuries-old
B．old-eight-centuries
C．eight-century's-old
D．eight-century-old
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