Complete the second sentence in such a way that it means the same as the given one.

1.They weren’t listening carefully so they didn’t understand what she was saying.

      Ä They might _____________________________________________________________

2.You took me to your friend’s party and I met Hung.

      Ä If you __________________________________________________________________

3.If you don’t wear helmet, you can't ride your bike.

      Ä Unless __________________________________________________________________

4.I would visit my grandpa, but it’s raining.

      Ä If ______________________________________________________________________

5.It's a pity that I don't have enough money, so I can't buy that dress.

      Ä If ______________________________________________________________________

6.Sue didn't miss the train because I woke her up in time.

      Ä If ______________________________________________________________________

7.Dan got so angry because we were an hour late.

      Ä Dan wouldn't ____________________________________________________________

8.Julia didn't take her umbrella yesterday, so she got wet.

      Ä If Julia __________________________________________________________________

9.Study hard or you’ll fail the exam.

      Ä If ______________________________________________________________________

10.I don’t see you very often because you live so far.

      Ä If ______________________________________________________________________

11.I don’t have enough money, so I’m not going to buy that skirt.

      Ä I’d _____________________________________________________________________

12.We don’t practice English very often. We can't communicate with foreigners.

      Ä We could _______________________________________________________________

13.I can't meet you now. I have to work.

      Ä If ______________________________________________________________________

14.The weather was bad so we didn’t go camping yesterday.

      Ä If the weather ____________________________________________________________

15.You didn’t phone us so we didn’t get there in time.

      Ä We would ______________________________________________________________

16.I wasn’t able to help you because you didn’t explain the problem to me.

      Ä I might _________________________________________________________________

17.He didn't go to a university because he didn't pass the exam.

      Ä Had ____________________________________________________________________

18.I wouldn't have succeeded if my parents hadn't encouraged and supported me.

      Ä I wouldn't have succeeded but ____________________________________________

19.If he didn't help me, my children wouldn't enter primary school.

      Ä Without ________________________________________________________________

20.Peter left his job yesterday because of his low salary.

            Ä If Peter's salary