1. If the chickens (cross) the road, they finally ( arrive) home safely.
2. If we ( sing) very loudly, neighbours (be / not) happy.
3. If I (to be) very tired, I always (yawn).
4. If I (go) forward, I (not / to step) back.
5. If he (to stop) breathing, he (start) choking.
6. If he (wear) braces, his trousers (not / fall).
7. If a car (be) out of fuel, it ( stop) beside the road.
8. If a plane (to be) out of fuel, it (fall).
9. If she (not / swim) anymore, she (sink) in deep waters.
10. If they (to breathe), they (live).
Тема: Zero Conditional
Объяснение:
1. cross, arrive
2. sing, aren't happy
3. am, yawn
4. go, don't step
5. stops, starts
6. wear, don't fall
7. is, stops
8. is, falls
9. doesn't swim, sinks
10. breather, live