By the end of next July this building____

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By the end of next July this building____
a.will have been completed b.will be completed
c.has been completed
选A,为什么呢?by the end of和什么时态连用呢?有类似的相关短语么?

因为这里是将来完成时态.
by the end of +过去的时间,句子一般采用过去完成时
eg:we had planted more than 500 trees by the end of last month.
by the end of +将来的时间,句子一般采用将来完成时
eg:i will have finished reading the book by the end of next month.

By the end of next July this building____ ________ the end of next July this task ________ finished． 1.By the end of July in 2008,he_______ university. TESTNINE 17.by the end of next month,the bridge 题：the project_(complete)by the end of next year. By the end of next month,the students__middle school. By the end of next week.中文意思 by the end of If the work by the end of this month is . They finish the bridge next year（用 by the end of next year改写 By the end of this term we____ten English lessons By the end of this year ,our new workshop will( )