In the bookshop, a reader asked the shopkeeper ________ Who Moved My Cheese was an interesting book.

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In the bookshop, a reader asked the shopkeeper ________ Who Moved My Cheese was an interesting book．

1. A.
   that
2. B.
   how
3. C.
   what
4. D.
   if

In the bookshop, a reader asked the shopkeeper ______ Who Moved My Cheese was an interesting book.

A. that         B. how         C. what         D. if