单项选择题

A．on
B．around
C．in
D．ahead
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单项选择题
A．WhileB．WhenC．SinceD．Until
A．While
B．When
C．Since
D．Until
单项选择题
Where did the speaker meet Susan
A．At Susan’s home.
B．In a swimming pool.
C．On a tennis ground.
D．At a dance party.
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