33.The second books was ___ by August 1952,but two years later,the end was still no where in sight.

问题描述:

33.The second books was ___ by August 1952,but two years later,the end was still no where in sight.
A.to be completed B.to have completed C.completed D.to have been completed
选A,为什么?

was to是一种常用于强调句的短语
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