Написать во множественном числе
1.this book
2.that house
3.my class
4.your friend
5.his wife
6.her watch
7.our lake
8.their pen
9.its square
10.your plan
11.one child
12.that day

везде приписывал букву s

1.these books2.those houses 3.my classes4.your friends 5.their wives6.their watches 7.our lakes 8.their pens9.its squares10.your plans11.one children 12.these days Надеюсь правильно ;)