单项选择题

If you want ______,you should speak slowly and clearly to the listeners.

A．to be understood
B．to understand it
C．understanding
D．to understood
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单项选择题
______his address, I can' t send this book to him.
A．Not knowing
B．Knowing
C．Not know
D．Not known
单项选择题
Does Tom know any other foreign languages______ English
A．but
B．except
C．besides
D．beside
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