用be动词的适当形式填空。

Question

如题所述

Answer 1

1 are
2 is
3 is
4 are
5 isn't

记住：一单am, 二单are ， 三单is ， 复数are ( 另外， 不可数名词要用单数)

Answer 2

are


is

is

are

isn't

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