1 Артикль 1) ... sky is blue. 2) We see three

1 Артикль
1) ... sky is blue.
2) We see three ... boys. ... boys are playing.
3) I have got ... sister. My ... sister is ... engineer.
2 Местоимения
1) I don't like tomatoes, I never eat....
2) I can't find my hat. Where is...?
3)Helen is my best friend. We often go out with....
4) She sometimes hurts... when she cooks.
5) Don't read this letter. It's not for .....
5 Множественное число существительных
1) The story is very boring.
2) We can see a cow, a horse, a goose, a sheep and an ox.
3) Put the book on the shelf.
4) Is it a mouse?
5) Her child studies at school.