1, We started learning English 4 years ago
2, My father has given up smoking since last year
3, They started working in that factory in 2001
4, Lan didn't write to Maryam a month a go
5, He started living in Ha Noi when he was 12
6, I didn't see her a long time ago
7, His exercises were finished on time
8, Rice is planted in those fields
9, Cars and trucks are used to carry food to the market
10, My window was broken by this boy yesterday
11, He has been known well
12, He will be met at the station
