Have/has to: I ____ to go on nature walk every weekend., My teachers ____ to dress smart., We ___ to get up early for school., We ______ to read some books in summer., Don't/doesn't have to: Adele ____ to do her homework. She is only 4!, My parents ____ to pass exa,s., They are lucky! They ____ to wear uniform at school!,

Unit 19. Grammar Have/has to vs Don't have to/doesn't have to

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