急~~Some people believe it dangerous _______ motorcycles.Somepeople believe it dangerous_______ motorcycles.A.for riding B.to ride C.to riding D.ride请问这题选什么···（后边的从句没有is）
问题描述：
急~~Some people believe it dangerous _______ motorcycles.
Somepeople believe it dangerous_______ motorcycles.
A.for riding B.to ride C.to riding D.ride
请问这题选什么···（后边的从句没有is）
答