I think it useful a_____,so I will take it.
I think it's _____ useful advice ,so I always remember it.
I think it's----useful advice.So I always remember it
I will take it.
填冠词.2.This is a useful dictionary,I think.So it is,and it's(
I will take of it..
I think it will rain.
So,I will make it~
I think it's_____useful advice,so I will always remember it
I think it is ___useful advise ,so I will always remember it
i think it so i believe it's will be trou!
I think it's a.useful job.翻译
I think it's useful for the environment.