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GRAMMAR : INFINITIVE AND GERUND PASSIVE INFINITIVE AND GERUND 1. Infinitive and Gerund: 1. You shouldn't let your children_ fire. (play) with matches. It's very easy_ (catch) 2. I enjoy. (be) busy. I don't like it when there is nothing (do) 3. Let's hurry! We must finish_ 4. As we don' ...