——Oh,someone is koncking at the door.

问题描述:

——Oh,someone is koncking at the door.
___must be Amy.We will go to the club together.是填that 还是It为什么?并补充一下this ,that ,it ,one 的具体用法.跪谢.

答案:It
分析:It 不知道对方是谁,或只闻其声,不见其人时用;另外,代替前面提到的东西
that 代替不可数名词(如人口,天气等)
one 代替同类事物 .
this 给对方介绍朋友时用,一般不用来代替前面的东西.
如 Your skirt is beautiful .Where did you buy it I want to buy one.
加油!不明白再问!谢谢你啊。看来你的英语还挺不错嘛。谢谢夸奖,如果帮到你,请采纳,谢谢!