III. Put the verbs into the right tenses (Conditional I). 1. If we (not have) enough water, we (be) thirsty. 2. Clean water (not be) a problem if people (stop) throwing rubbish into the seas and rivers. 3. If we (clean up) after picnics, there (be) less pollution.​

1. If we didn't have enough water, we would be thirsty.

2. Clean water would not be a problem if people stopped throwing rubbish into the seas and rivers.

3. If we cleaned up after picnics, there would be less pollution.