V)
1:If you don't keep silent,you'll wake the baby up.
2:If you don't leave immediately,I 'll call a policeman.
3:If I knew her number,I would ring her up.
4:If you don't go right now,you'll be late for the train.
5:If she weren't often absent from the class,she would keep pace with her classmates.
6:If I knew Alice's adress,I would write to her.
7:If I knew the answer,I would help you.
8:If we had a map,we wouldn't get lost.
9:If my friends hadn't been so late,they wouldn't have missed the train.
10:If today were Sunday,the students could go swimming.