1/ HE is not a poor man any more ,but he become a rich businessman.
-He used to be a poor man , but now he is a rich businessman
2/They didn't often
-They didn't use to go to the cinema every Sunday last year
3/ My hair now is much longer than that in the past
-In the past my hair used to be short
4/ I don't have time to collect stamp as when I was in primary school
-I used to collect stamp when I was in primary school
chuc bn hoc tot^^