Ex.1. Complete the sentences with the first conditional form of the verbs in brackets. 1. If the ice caps … , sea levels … . (to melt / to rise) 2. The climate … hotter if we … something about it. (to get / not to do) 3. If we … our old paper to the paper bank, they … us for it! (to take / to pay) 4. More countries … from droughts if global warming … . (to suffer / not to stop) 5. We … a new campaign if this one … a success. (to start / to be) 6. If we … something soon, the problems … (not to do / to grow)