单项选择题

______ you had listened to me!

A．Only if
B．If only
C．If
D．Only
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单项选择题
The dog's ears ______ when it ran.
A．flopped
B．flipped
C．fluttered
D．flapped
单项选择题
In a moment the little bird, set free after being encaged for weeks, would rise swiftly ______.
A．out of view
B．out 6f seeing
C．out of hand
D．out of sight
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