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?

By the end of next week.中文意思 They finish the bridge next year（用 by the end of next year改写） by next year和by the end of next year它们有没有区别?主句的时态一样不一样? The teaching building is said to have been completed by the end of next month. 题：the project_(complete)by the end of next year.请说明原因 By the end of next month,the new buildings in our school__finished用什么时态? i expect ____ (finish ) the work by the end of next month.要用非谓语动词填空 My publisher wants to see the first d____ by the end of next week. by the end of last We’ll finish the book -----next month .-----next month we‘ll learn about 2000 English words.A.at the end of,by the end of B.in the end ,by the end of c.by the end of,at the end of 为什么?给答案的朋友请说明一下理由,我有点混淆 We’ll finish the book -----next month .-----next month we‘ll learn about 2000 English words.A.at the end of,by the end of B.in the end ,by the end of c.by the end of,at the end of 为什么? my mother will be there () the end of next week填by还是at，为什么 By the end of next week he will be back.改错. By the end of next month, he will have traveled 1000 miles on foot. 翻译 还有一个问题,这是最后一个了 They will finish the bridge next year.(用by the end of next year改写）They______ ______ ______ the bridge by the end of next year at the end of和by the end of at the end of造句 by the end of造句 By the end of next year they will finish the work on the new stadium.这句话对吗?请赐教