当你想把Mike介绍给妈妈，你会说（）

A.This is Mike

B.This is Tom

C.I am Tom

D.It' Tom

A.My name is Mike

B.See you, Mike

C.This is Mike

A.Mike, this is my brother, Sam

B.Sam, this is my brother, Mike

C.Sam, Mike, this is my brother

A.I'm from the USA

B.I'm Mike

C.She is from China

A.I’m sorry

B.Thank you

C.Here you are

A.This is for you

B.Thank you

C.Is this for you

A.This is Bob

B.ob has a new schoolbag

C.Hello，Bob

A.He’sbehindthedoor

B.He’sbesidethedoor

C.It’sbehindthedoor

A.My name is Amy

B.This is Amy

C.I am Amy