Who is this?一般怎么回答?

Who is this?一般怎么回答? Who is this 是正确的句子吗?怎么回答? who is 怎么回答 who is that怎么回答 Who is she怎么回答 who is john?怎么回答 Who's this?该怎么回答? This is yellow flower改一般疑问句怎么改并肯定回答和否定回答.急 who is.怎么回答简单回答怎么说 who is that speaking?为什么回答是This is...speaking Is this Tom?怎么回答 what's this in English?怎么回答?可以用this 还是只能用It is 还有Who is that?是要用he/she还是it回答 This is our school 的一般疑问句并作否定回答怎么改? This is my watch 怎么改成一般疑问句并做肯定回答 Who's this用this is回答还是it is回答 Who is that speaking 回答用this 还是that Who Is Your Best Friend?怎么回答 Who is Ann's teacher?,怎么回答?