Are they swimming in the pool?, No, they aren't, Yes, we are, Yes, they are, Yes, he is, Is she taking photos?, Yes, she is, Yes, he is, No, he isn't, No, she isn't, Is it swimming?, No, it isn't, No, he isn't, Yes, it is, Yes, she is, Is he taking photos?, No, he isn't, Yes, he is, No, it isn't, Yes, it is, Are you playing a game?, No, I am not, No, they aren't, Yes, I am, Yes, they are, Are men working?, Yes, he is, No, they aren't, Yes, they are, No, he isn't, Is the boy sitting on the sofa?, Yes, she is, Yes, he is, No, he isn't, No, she isn't, Is Ann playing the piano?, Yes, she is, Yes, Ann is, No, she isn't, Yes, he is

present continuous ?

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恢復自動保存: ?