—Mary, is this your sister's cup?
—No, it isn’t. is purple.
A.She B.Her C.Hers
Teachers don’t like their students to be for school.
A.late B.tidy C.boring
—Is Helen mother?
—No, isn’t.
A.she, her B.her, her C.her, she
I have a computer, I don’t play computer games on it.
A.also B.and C.but
This my sister and those my brothers.
A.is, is B.are, are C.is, are
下列各组字母中全部是元音字母的是 ____。
A.a, e, o, r B.a, i, u, e C.o, u, e, n