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?
A.to be completed B.to have completed C.completed D.to have been completed
选A,为什么?
问题解答:
我来补答展开全文阅读