Complete the zero conditional sentences with the correct form of the verbs in brackets.

Решение:

1. People don't swim here when they see the red flag on the beach.
2. When sharks get hungry, they are a danger to swimmers.
3. Broken glass cuts your toes if you don't wear shoes.
4. Swimmers get very cold if they stay in the sea too long.
5. If the temperature falls below 0°C, water turns into ice.
6. If a bee stings you, it really hurts.