Объяснение:

could

can

must

mustn't

may

Ron can't play football. Can Ron play football?

Sue must learn the poem. Must Sue learn the poem?

Jack and Paul mayn't ride a bike. May Jack and Paul ride bike?

Amy couldn't skate last year. Could Amy skate last year?

You mayn't watch the cartoon. May you watch the cartoon?

Who can play computer in his room? What can do Mary in her room? Where can Mary play computer?

Who must go to school at nine o'clock? Where must Jack go at nine o'clock? When must Jack go to school?