单项选择题

To learn is one thing, to teach is ______.

A．the other
B．other
C．others
D．another
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单项选择题
I'll be working ______ tomorrow.
A．all day
B．the all day
C．on the all day
D．on all the day
单项选择题
—Waiter! —______ —I can't eat this. It's too salty.
A．Yes, sir
B．What
C．All right
D．Pardon
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