Exercise 1: Put the verbs in brackets into the correct forms.

1. If I (know)                  that you were ill, I (go)                  to see you.

2. I (see)                  him if I (go)                  to the party last night.

3. What                  (you/ do) if you                  (be) him?

4. If I (make)                  that mistake again, my teacher                  (get) angry with me.

5. If he (go)                  to London yesterday, he (meet)                  his old friend.

6. My dog (bark)                  if it (hear)                  any strange sound.

7. If you (not go)                  away, I (send)                  the police.

8. If I (be)                  in your police. I (accept)                  Mr. Anderson’s invitation.

9. I was busy. If I (have)                  free time. I (go)                    to the cinema with you.

10. Why didn’t you attend the meeting?

Oh, I didn’t know. If I (know)                 , I (come)                  there.