1. He can see if he turns on the light.
a) He if he on the light.
b) He if he on the light.

2. Where will you go if you take a vacation?
a) Where if you a vacation?
b) Where if you a vacation?

3. If they finish this work they will leave the office early.
a) If they this work they the office early.
b) If they this work they the office early.

4. If he likes the house will he buy it?
a) If he the house it?
b) If he the house it?

5. If I have some money I will buy a DVD player.
a) If I some money I a DVD player.
b) If I some money I a DVD player.

6. If I have a computer I will type my letters.
a) If I a computer I my letters.
b) If I a computer I my letters.

7. I will be ruined if I do it.
a) I ruined if I it.
b) I ruined if I it.

8. He will be wiser if he is older.
a) He wiser if he older.
b) He wiser if he older.

9. We will do it if we can.
a) We it if we .
b) We it if we .

10. If you don't stop here you won't be able to buy her one.
a) If you here you to buy her one.
b) If you here you been able to buy her one.