单项选择题

—This ruler is three times as long as that one.
It is not______ to discuss the question again and again.

A．worth
B．worthy
C．worthwhile
D．worth while
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单项选择题
Tell him ______the window.
A．to shut not
B．not to shut
C．to not shut
D．not shut
单项选择题
The murder was brought in, with his hands______ behind his back.
A．being tied
B．having tied
C．to be tied
D．tied
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