I think it's useful for the environment.
I think it's useful for the environment.
I think it’s mainly from the environment a person lives it.这
I think it's a.useful job.翻译
For the students,it's useful to do more_____.
I think it's _____ useful advice ,so I always remember it.
I think it's----useful advice.So I always remember it
You have done something useful to i( ) the environment
填冠词.2.This is a useful dictionary,I think.So it is,and it's(
Because I think it's useful.I want to learn English[ ].补全对话
I think it is useful for us to help other people.改为一般疑问句
I think it's our duty to keep our environment clean and tidy
I think that it's a useful to learn a foreign-language.