I have no idea____________ the book is __________ to your English study.A．whethe

题干

I have no idea____________ the book is __________ to your English study.

A．whether ; of great value	B．if ; of great value
C．that ; so value	D．how ; very valuable

上一题下一题 0.4难度单项选择更新时间:2012-09-06 04:32:45

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