单项选择题

The question is worth ______ again.

A．discussing
B．to discuss
C．discussed
D．discuss
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单项选择题
He apologized to his wife for having ______ her.
A．offended
B．protected
C．objected
D．defended
单项选择题
If you want to speak English well, you must practice it ______.
A．repeatedly
B．repeatingly
C．repeating
D．repeated
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