I think it is ___useful advise ,so I will always remember it

问题描述:

I think it is ___useful advise ,so I will always remember it
A a B an C the D (无)
说明选择理由,

D advise是不可数的.选择此类问题答案,不可看前面的单词useful,以U开头就选A或AN,而应该看他所休市的词,在判断答案.