Fill in: can't, must(n't), need(n't), ought to, have (got) to or don't have to.

Jo : Hello, Mum. Are you still awake? You 1)need have waited up for me.

Mum : Do you know what time it is? It's after midnight and you 2) have got to go to school in the morning.

Jo : I'm sorry, but I missed the last bus.

Mum : Well, you 3)ought to have phoned me then. You 4) ......... come in at any time you want. I was worried.

Jo : Oh Mum, you 5) ..................... worry about me. Anyway, you 6) ............. walk miles

to find a telephone that works.

Mum : Then next time you 7) .......... be sure to catch the bus. You 8) ....... walk in the dark alone.

Jo : Yes, Mum. I'm going to bed now - I 9) ............... to get some sleep. And by the way, I 10) ……………. go to school in the morning – tomorrow’s Saturday.

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