решите тест пожалуйста

1 how much does this sweater cost? (b)
2 how much is this sweater? (a)

3 it isn't rainy in summer. (c)
4 it doesn't often rain in summer. (b)

5 I don't stay at home on Sundays. (b)
6 I am not at home on Sundays. (a)

7 he doesn't have enough money. (b)
8 he isn't rich. (a)

9 Mag and her sister don't live in Rome. (c)
10 Mag and her sister aren't in Rome. (a)

11 Pat's mother doesn't teach students. (b)
12 Pat's mother isn't a teacher. (a)

13 it doesn't cost much to stay at that hotel. (a)
14 that hotel isn't expensive. (b)