单项选择题

It is not ______ to discuss the question again and again.

A) worth
B) worthy
C) worth while
D) worth while
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单项选择题
The point is not who said the words, ______ they are true or not.
A) but whether
B) and whether
C) but how
D) and how
单项选择题
They knew her very well. They had seen her ______ up from childhood.
A) grow
B) grew
C) was growing
D) to grow
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