he has a very quick -----He is very clever A idea B mind Cact D sound

问题描述:

he has a very quick -----He is very clever A idea B mind Cact D sound
选哪一个为什么,A 和B 都有主意的意思

答案:B
idea 表示“主意,想法”,而mind 表示“头脑,智力”.