can, I ... speak English very well., must, You ... wear a face mask to protect yourself., mustn't, You ... take pictures in the museum. It's forbidden., May, ... I come in?, shouldn't, You ... smoke. It's bad for your health., should, You ... wash your hands frequently., would, .........you like to eat more dessert?, could, When I was younger I .........run very fast., couldn't, In 1880 we ...............watch TV., can't, Be careful, you .......swim!.

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