单项选择题

A．She knows he’s very busy.
B．He’s already helped her enough.
C．He doesn’t know enough chemistry.
D．She doesn’t need any help.
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单项选择题
A．The game is on ice.B．Skating on thin ice.C．To cut no ice.D．To break the ice.
A．The game is on ice.
B．Skating on thin ice.
C．To cut no ice.
D．To break the ice.
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