Ответ:
1)I didn't was at home yesterday
2)I was at school
3)I was happy, because my friend were at school,too
4),they were happy ,too
5)Tom was in playground last week
6)he was with his dad
7)Tom's mum wasn't in playground
8)Sally and Tom were in the zoo last week
9)there were elephants in the zoo
10)it was great