Помогите с тестом нужно воткнуть верно слова ( с этими произошли

Помогите с тестом необходимо воткнуть верно слова ( с этими произошли трудности)
11 __ in the sea makes you really strong
A) swim B) swimming C) swiming

12) It's snowing ____
A) Putting your hat on B) Your hat put on
C) Put your hat on

13) A key is a thing ____ you use to open doors
A) where B) which C) who

14) ___ to the basketball match on Saturday
A) are you going B) do you go C) will you go

15) She ___ invite him if she didn't want him to come
A) won't B) not C) wouldn't

16) I need some advice. What ____ i do?
A) should B) must C) could

17) This castle ___ in 1600
A) was built B) built C) was build

18) I dont't have ___ money left, because I bougth a new jacket
A) much B) many C) lots