1. he ( have/ has, can, must, should/ shouldn't) get up early up early as his classes start a 7.30 am. 2. i ( have/ has, can, must, should/ shouldn't) sing quite well when i was younger. 3. you ( have/ has, can, must, should/ shouldn't) drive through a red traffic light. 4. people ( have/ has, can, must, should/ shouldn't) walk their dogs in the park. 5. we ( have/ has, can, must, should/ shouldn't) clear away the mess in the kitchen.
2. I (could) sing quite well when I was younger.
3. You (mustn't) drive through a red traffic light.
4. People (can't) walk their dogs in the park.
5. We (must) clear away the mess in the kitchen.