TESTNINE 17.by the end of next month,the bridge

问题描述:

TESTNINE 17.by the end of next month,the bridge
A)will be built
B)has been built
C)will have been built
D)is to be built

根据BY……MONTH‘ 到下个月末’可知动词还没发生, 排除B, 而by 到……为止,一般与完成时连用,即一般将来时的完成时态‘ 到下个月末, 这座桥就要建好了.所以答案是C
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