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的動作或事情。 They are having a piic. Today is Sunday. They are having a piic. Grandpa is___________________________. Homework(作業(yè)) ,將動詞變成“ ing”形式,并造句。s at the supermarket. Simon’s mum is buying things for Daming’s birthday party. Then what’s happening? Who can help Simon’s mum ? The balloons _______________ . The oranges ________________ . The balloons say,_________________. are flying away are falling Happy birthda