I think it important for us to do something 什么情况下is可以省略吗?

I think it important for us to do something 什么情况下is可以省略吗? I think it is important for me to do something to protect bi i think it is very important to do something.&i think it ver I think learning English is important for us和I think it is i It's really important for us to do something (make) our scho It is important( ) A for us to do eye exercise B for us to d 不是有i think it easy for me to do something吗,那么i think it easy 英语连词成句 it,something,know,is,history,to,us,important,for,abou It is important for us to ______. 用英语解释句子.1.It is vital for us to do something to save Earth（i i think it important to do sth We think it is important for us students to study English we