Choose the correct item.

1 You mustn't/can only take up to 23 kg of luggage on the plane.

2 Nurlan's plane is delayed so he has to/can't
wait an hour before he can leave.
3 You can't/needn't hunt elephants for their
ivory as it's illegal.
4 Dilnaz must/might come on holiday with us
if she can get time off work.
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