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doing? He is kicking a ball. 他正在踢球。 ? kick[ kik ] kicking 直接加上 ing Wow!What’s this? Let’s listen to the tape, what happened? Why Mark was so sad? Let’s conquer them 請(qǐng)根據(jù)答句補(bǔ)充問(wèn)句。 ?What ? She is watering the flowers. ?What ? He is writing a letter. ?What ? Sally is singing a song. is she doing is he doing is Sally doing ? 感謝聆聽(tīng)!