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 |
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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 |