1.the accidents happened because th

1.the accidents happened because the driver in front stopped so suddenly
- if the drive in front hadn’t stopped suddenly the accident wouldn’t have happened
2.i didn’t known that Lan had to get up early, so I didn’t wake him
- if I had known that Lan had to get up early , I would have woken him up
3.i was able to buy the car only because Hoa lent me the money
- if Hoa hadn’t lent me the money , I wouldn’t have been able to buy the car
4. Mary was not injured in the crash because she was wearing a seat belt
- if Mary hadn’t been wearing a seat belt , she would have been injered
5. you did not have breakfast – that is why you are hungry nown
- if you had had breakfast , you wouldn’t be hungry now
6. I did not get a taxi because I did not have any money on me
- if I had had some money on me , I would have got a taxi