题目内容

We celebrate National Day _____________.

A. once year
B. one year
C. annual
D. annually

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Since the Tang Dynasty, Luoyang ________________ the land of peony.

A. is known as
B. was known as
C. has been known as
D. had been known as

Tourists are ___________________ protect the local environment.

A. supposing to
B. supposed to
C. supposing with
D. supposed with

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A. well-being
B. well-known
C. well-off
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A. not......but
B. either......or
C. neither......nor
D. both......and