Another two months will be needed before the new bridge ___A completesB is completedC has completedD will be completed 求答案和选择这个答案的原因,正确答案是B求为什么是B

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Anothertwomonthswillbeneededbeforethenewbridge___AcompletesBiscompletedChascompletedDwillbecompleted

Another two months will be needed before the new bridge ___A completesB is completedC has completedD will be completed 求答案和选择这个答案的原因,正确答案是B求为什么是B
Another two months will be needed before the new bridge ___
A completes
B is completed
C has completed
D will be completed 求答案和选择这个答案的原因,
正确答案是B
求为什么是B

Another two months will be needed before the new bridge ___A completesB is completedC has completedD will be completed 求答案和选择这个答案的原因,正确答案是B求为什么是B
B
首先 桥是被建吧 所以 AC排除
其次 桥没建成呢 还在建 将要建成
刚说错 这里还是将要被建好 但是 有个原则 主将从现
就是主句将来时 从句现在时 前面有个will 吧 已经表示将来了 所以后面用一般式