I ____ play football at school. (-), I could play football at school. , I couldn't play footbal at school., We ____ drive a car. (-), We could drive a car., We couldn't drive a car., She ____ run well. (+), She could run well., She couldn't run well., My brother ____ play the piano when he was seven. (+), My brother could play the piano when he was seven., My brother couldn't play the piano when he was seven., You ____ ride a bicycle when you were four. (-), You could ride a bicycle when you were four., You couldn't ride a bicycle when you were four., He ____ fly a plane. (+), He could fly a plane., He couldn't fly a plane..

Could - Couldn't

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