My grandfather ____ play the piano when he was young ____ you come to the party tomorrow? We ____ see the stars clearly last night. She ____ ride a bicycle without training wheels now. He ____ solve this math problem easily when he was in school. I ____ hear strange noises from the attic last night. ____ you give me a hand with this heavy bag? They ____ visit their grandparents this weekend if they want. My baby brother ____ walk when he was only nine months old. ____ you explain that again more slowly, please?

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