What is the cloth useful——?---We can use it ——the dirty floor.A.to:clean B.for:to clean C.for:cleans

题目

What is the cloth useful——?---We can use it ——the dirty floor.A.to:clean B.for:to clean C.for:cleans D.to：cleaning
选哪个?能说明每个空的原因吗,好的加多多多多分!

答案

B be useful for 对...有用处
use...to do...用.去做...