Đáp án:
Bài 1:
8: are ; is ; is 13: is
9.is 14: is ; isn't
10:is ; isn't 15: are
11:are ; aren't 16; isn't ; is
12: are
bài 2:
1: is 3: is
2: are 4:are/are
5: is 6: are/are
7: is 8: are
9:are
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