actories (not dump) ______________waste into rivers if the government fines them heavily. 2. If people travel to work by bus, there (be) ______________fewer car fumes. 3. We (save) ________________thousands of trees if we don’t waste paper. 4. If we use water carefully, more people (have) ______________fresh water. 5. If he (study) ________________ harder, he can pass an exam. 6. She may be late if she (not hurry) ________________. 7. If you study harder, you (pass) ________________ the exam. 8. If you are kind to me, I (be) _______________ good to you. 9. If he (give) _______________ up smoking, as his doctor orders, he will be soon well again. 10. You (not pass) _______________ your driving test unless you drive more carefully. 11. He’ll be ill if he (not stop) ________________ worrying so much. 12. We’ll go to the beach tomorrow if it (be) ________________ nice.