一What should we do first if we want to develop our village?

一A lot of new roads __________．I think．

A．must build     B．have to build          C．must be built         D．have built

1、C

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一What should we do first if we want to develop our village?

一A lot of new roads __________．I think．

A．must build     B．have to build          C．must be built         D．have built

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