向别人介绍自己的朋友时，可以说：A、This is Mike . B、I’m Mike .
Which your umbrella? A. doB didC.is
Let’s my umbrella. A.gotB.hasC.get
aren’t Lingling’s toys. A.ItB.TheyC.This
That isbag. A.youB.LilyC.my
This isred pen. A.IB sheC.your
your umbrella?
my umbrella.
aren’t Lingling’s toys.
bag.
red pen.
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