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rt and thin. Look at the blackboard. It’s dirty. This is her mother. She’s beautiful. Clean the blackboard. Look at the blackboard. It’s clean. door window classroom blackboard door window blackboard 一、根據左面的圖片在四線格中填入相應的單詞。 door window blackboard Clean the . 二、請根據圖片提示及語境填入適當的單詞。 . Please close the . Open the