Question

he"s , he is , his, it"s, its , it is, they"re, their, they are

1.Peter and Liz are reding bikes. -- bikes are new.
2. There are many pets in the pet shop. -- very lively and nice
3.Mr. Wing has got a dog. -- name is Blackie

Answer 1

1 they
2 its 3its все легко