Choose the right answer
A: [Can|Must]
I answer my mobile phone in class?B: No, you [can|can't]. You [don't have to|mustn't] use it in class.
A:
I
[can't|couldn't]
find my keys anywhere.B: You [couldn't|shouldn't] leave your things just anywhere, Tom.
A: [Do I have to|Could I]
speak to you for a minute, please?B: Of course.
A:
Be quiet, Todd! You
[don't have to|mustn't]
talk during the exam.B: I know. I'm very sorry, Miss.
A: [Can|Must]
you lend me your calculator, please?B: Yes, of course. Here you are.
A:
You
[have to|should]
pay to park here.B: I wonder if it's expensive.
A: [Do we have to|Could we ]
keep our tickets?B: Yes, until we get off the train.
A:
Is Mr Grey here?B: No, but you [can|must] wait in his office if you like.
A:
Where
[can|should]
I find cheap airline tickets?B: You [can|have to] try booking them online.
A:
You
[don't have to|can't]
do the washing-up.B: That's OK. I want to.