单项选择题


When did the National Park Service begin

A． In the early 1800’s.
B． In the late 1800’s.
C． In the 1700’s.
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What had happened to the man
A． He had been burnt.
B． He had been wounded.
C． He broke his legs.
单项选择题
Is the woman going to take the bus
A． Yes.
B． No.
C． She’s not decided yet.
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