Question

open the  brackets using Past simple , Past continuous  and Past Perfect  :
1)Before Mike (to go )to the mountains,he (to have ) a serious didease.
2)Julian said he (to visit) all the footwear stores in the town 
3)Last Friday  my class  (to have  a meeting at which  we (to talk )about  hygiene at school and at home .

Answer 1

1) Before Mike went to the mountains, he had had a serious disease.
2) Julian said he had visited all the footwear stores in the town.
3) Last Friday my class had a meeting at which we were talking about hygiene at school and at home.