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rink B. drunk C. drinking D. drank ( )4. A. clear B. clearer C. louder D. loudly ( )5. A. easier B. easy C. more easily D. easily ( )6. A. pollute B. polluting C. pollutes D. polluted ( )7. A. light B. hard C. thick D. thin ( )8. A. well B. waste C. wasting D. wasted ( )9. A. pour B. place C. plan D. protect ( )10. A. instead of B. instead C. because of D. because 參考答案: 一 . 1. several 2. waste 3. polluted 4. mess 5. shame 二 . see sb. doing (正在)