. This is the first time I’ve never painted a mural over graffiti. I have never________________________________________________ 2. Mr. Binh started recycling rubbish two years ago. Mr. Binh has__________________________________________________ 3. David failed the exam because of his laziness. Because David _______________________________________________ 4. They haven’t cleaned up the street for five months. It’s_____________________________________________________ 5. We have donated books and clothes for ten years. We began ______________________________________________________

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