Resposta:
Pra colocar as frases no passado simples, é apenas substituir o ''Are'' por ''Was'' ou ''Were''
Explicação:
1) He was a good student.
2) They were here.
3) It was all right.
4) We were busy.
5) She was happy.
6) They were at school.
7) I was not in the garden.
8) They weren't sad.
9) Where was he?
10) He wasn't at home?
11) It wasn't important.
