who is that?A.That's a student B.It's Bob C .This is Bob

问题描述:

who is that?A.That's a student B.It's Bob C .This is Bob

B

B

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选择B 在不确定对方是谁时要用it 来做主语

B 那是谁? 是鲍勃
回答要用it's

C 打电话用语

B。因为问那是谁,要回答到人。然后因为从题目判断离得较远,故用it's

b

C .This is Bob
who is that?一般是打电话和敲门时,会问你是谁.然后回答必须是this is...

选择B 在不确定对方是谁时可以用it 来做主语