Are you good at swimming?, We are good at dancing., They aren't good at singing., He isn't good at walking., Are you good at skipping rope?, They aren't good at running., I am good at climbing trees. , She isn't good at skating. , I'm not good at hopping. , She is good at skipping rope. ,

Unit 1 Grammar: is good at/isn't good at / are good at/aren't good at

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