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Sentence combining: Verbals and verbal phrases To practice writing sentences with verbals and verbal phrases, combine each of the following pairs of sentences into one sentence. You will have to add, delete, change, and rearrange words. Each item has more than one possible answer. 1. Air pollution is a health problem. It affects millions of Americans. 2. The air has been polluted mainly by industries and automobiles. It contains toxic chemicals. 3. Environmentalists pressure politicians. They think politicians should pass stricter laws. 4. Many politicians waver. They are not necessarily against environmentalism. 5. The problems are too complex. They cannot be solved easily.