题目内容
--What would we do first if we want to develop our village?
--A lot of new roads _____, I think.
A. have to build B. must build
C. have built D. must be built
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题目内容
--What would we do first if we want to develop our village?
--A lot of new roads _____, I think.
A. have to build B. must build
C. have built D. must be built