单项选择题


A．and
B．but
C．or
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单项选择题
A．LuckilyB．ThenC．Lucky
A．Luckily
B．Then
C．Lucky
单项选择题
They don't know if it ______tomorrow. If it______, they will not go to the park.
A．will rain; rains
B．will rain; will rain
C．rains; will rain
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