Помогите пожалуйста!!!выберите правильную букву!!!
16)Sorry. You ..... come with me. I must go alone.
a) can b) must c) can't

17)There were ....... people at the concert.
a)much b) a lot of c) any

18)There's not ...... milk in the fridge. Can you go and buy some?
a)little b)some c)much

19)How ......your holiday?
a)was b)were c) wasn't

20)She baked a ....... of bread this morning.
a)piece b)loaf c)slice