12 )
Complete the sentences with the first conditional form of the verbs in brackets
1. If all the ice in the Arctic and Antarctic regions ... (to melt), sea levels ... ( to rise) and cause terrible floods
2. If we ... (not to stop) the destruction of forest, our climate ... (to change) and cause natural disasters including flooding, drought and famine
3. If we ... (not to restore) an ecological balance on our planet, we ... (not to leave) our earth clean and healthy for future generations
4. If we ... (to plant trees), we ... (to reduce) air pollution
5. If we ... (not to educe) public about the importance of nature protecting, we ... (to destroy) our planet
6. The animals ... (to disappear) if we ... (not to begin) to change our behaviour, we ... (not to have) the world to live.
13) Complete the sentences with the zero conditional form of the verbs in brackets
1. If we ... (not to water) flowers at home, they ... (to die)
2.If you ... (not to speak) any foreign language, you travelling ... (not to be) comfortable.
3. If you ... (to want) to enter a university, you ... (to have) to work hard.
4. If you ... (to speak) some foreign languages, you ... (to have) better job opportunitiels
5. If the weather ... (to be) warn in spring, the ice ... (to melt).
6. If the weather ... (to be) very cold in winter, rivers and lakes ... (to be) frozen