1. If he (to rewrite) those words, he (to get) a good mark. 2. The policemen (to help us if we (to call) them.
3. If they (to be interested) in this theme, they (to make) a good
report.
4. Our forest (to be clean) if people (not/to throw) garbage in it.
5. If you (go) to bed earlier you (not feel) so tired.