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2.They ____ my friends.
3.Helen and Nancy ____ Americans.
4.You ___ so tall.
5.The water hot.
6.She a student.
7.Where ___ your mother?
8.Who ___ I?
9. ___ you happy?
am
are
are
are
is
is
is
am
Are
I am = you are =
she is = he is =
it is = we are =
they are =
I’m
you’re
she’s
he’s
it’s
we’re
they’re
be动词口诀：
我用am，你用are，is连着她、他、它，