【答案】— The box is too heavy to carry. What’s in it?

— The box is too heavy to carry. What’s in it?

— Oh, it is ______ books.

A. filled with B. covered with C. used for D. asked for

【答案】

A

【解析】

句意：---这个盒子太重了搬不动。里面有什么？---里面装满了书。A装满；B覆盖；C被用来；D要求。此题考查固定短语be filled with装满。根据句意，应选A。