单项选择题

A．Chemistry.
B．English.
C．Math.
D．History.
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单项选择题
A．pullingB．raisingC．liftingD．carrying
A．pulling
B．raising
C．lifting
D．carrying
单项选择题
A．can’t have hadB．should have hadC．must have hadD．needn’t have had
A．can’t have had
B．should have had
C．must have had
D．needn’t have had
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