The workers plan to spend three years building the bridge.(用it作形式主语)It---- ----the workers three years--- ----the bridge.
问题描述：
The workers plan to spend three years building the bridge.(用it作形式主语)
It---- ----the workers three years--- ----the bridge.
答
will take to build
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答
It will take the workers three years to build the bridge.
工人们将花费三年时间修建这座桥.