1.1 for
2 for
3 since
4 since
5 since
6 since
7 for
8 since
9 since
10 since
2.1 minh hasn't written to his pen pal for five months
2 I haven't visited to kula lumpur for 3 years
3 how long have you studied english?
4 they have built this house for 2 months
5 my father has worked for in this factory for a week
6 when did he work in the garden?
7 how long have you learnt music?
8 he has lived in ho chi minh city since he was 18
9 he has learnt english since he was 18
3.1 letters are typed by mary in the office
2 I will be helped tomorrow by my father
3 this bottle was broken by peter
4 english is being learnt in the room
5 the children will be brought to home by my students
6 they were given more information
7 the engine of the car has to be repaired
8 a lot of money is spent on advertising everyday
9 a cake is being cut with a sharp knife by mary
10 a story is going to be told by teacher