初中英语 I think __important to listen to listen to teacher carefully in class A it B thatit 和 that 应该怎样来分别,告诉我这道题的解析个it 和that 的用法

初中英语练习题i 初中英语句型讲解（ ）I'll be in ten year?A.What do you think B.Do you think what请问选哪一选项?为什么?请分析. I think i think I Think I think I i think i love i think i love i think so i I think I’m I think I understand 初中英语in the future i think cities will be crowded because there will be a lot __people.A.more B.fewer C.less D.many I think I think too much. I think--I think too much. I will think about everytime i think about I think of you I think English easy