past 1
4. this is the first time i have seen this film
5. although he was had a serious illness,he went to school
past 2
1. Cuong will be a famous teacher in the future
2. though it rained yesterday,we played soccer togetther happily
past 3
1. we used to uniforms,when we were at school
2. i have not met my parents since last sunday
3. she wish she had a new computer