

1. Water .......................... (freeze) if the temperature falls below zero.
2. If he’s angry, his face always ........................(go) bright red.
3. If you put your money in a savings account, you ............................(get) ten percent interest.
4. If the microphone isn’t working, you ......................... (can/ hear) what he’s saying.
5. The radio .........................(not work) if the batteries are flat.
6. If there .....................................(be) only a few students, we usually close one of the classes.
7. The machine ......................................... (not work) if it doesn’t have enough oil.
8. If a balloon is filled with hot air, it ..............................(rise).
9. If water ............................. (boil), it changes into steam.
10. The machine stops automatically if something ...........................(go) wrong.
11. If he ..................................(see) me here, he ............................. (be) really angry.
12.
Mary ...........................(be) worried if you don’t come to the airport.
13. If it .................................. (snow) this winter, we ............................... (go) skiing.
14. I ............................. (lend) them some money if they ................................. (ask) me.
15. If you ...........................(visit) Oxford, you .................................. (see) some interesting old buildings.
2. If he’s angry, his face always ........................(go) bright red.
3. If you put your money in a savings account, you ............................(get) ten percent interest.
4. If the microphone isn’t working, you ......................... (can/ hear) what he’s saying.
5. The radio .........................(not work) if the batteries are flat.
6. If there .....................................(be) only a few students, we usually close one of the classes.
7. The machine ......................................... (not work) if it doesn’t have enough oil.
8. If a balloon is filled with hot air, it ..............................(rise).
9. If water ............................. (boil), it changes into steam.
10. The machine stops automatically if something ...........................(go) wrong.
11. If he ..................................(see) me here, he ............................. (be) really angry.
12.
Mary ...........................(be) worried if you don’t come to the airport.
13. If it .................................. (snow) this winter, we ............................... (go) skiing.
14. I ............................. (lend) them some money if they ................................. (ask) me.
15. If you ...........................(visit) Oxford, you .................................. (see) some interesting old buildings.