Have to and Must

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"I don’t want anyone to know about our plan. You ______ tell anyone."

• mustn't

• don't have to

• doesn't have to

• must

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Richard ______ wear a suit to work but he usually does.

• mustn't

• don't have to

• doesn't have to

• must

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There’s a lift in the building so we ______ climb the stairs.

• mustn't

• don't have to

• doesn't have to

• must

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I promised Kate I’d call her tomorrow. I ______ forget.

• mustn't

• don't have to

• doesn't have to

• must

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I’m not very busy. I have a few things to do, but I ______ do them now.

• mustn't

• don't have to

• doesn't have to

• must

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Sophie likes weekends because she ______ get up early.

• mustn't

• don't have to

• doesn't have to

• must

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You ______ be a good player to enjoy a game of tennis. Anyone can have fun with it!

• mustn't

• don't have to

• doesn't have to

• must

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You should keep trying to find a job. You ______ give up.

• mustn't

• don't have to

• doesn't have to

• must

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I ______ eat too much. I’m supposed to be on a diet

• mustn't

• don't have to

• doesn't have to

• must

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We have plenty of time before our flight. We ______ check in yet.

• mustn't

• don't have to

• doesn't have to

• must