Many residents are supposed to the motorway. It is not a wise decision.A. buildB. buildin

问题补充：

Many residents are supposed to the motorway. It is not a wise decision.

A. build

B. building

C. be building

D. have built

答案：

(答案→)A. build

B. building

C. be building

D. have built

解析：本题考查动词。be supposed to do应该做某事，根据句意，应当用不定式的一般时，故选A。