We have enough milk in the fridge so we (must, mustn't, needn't) buy some more.
We have enough milk in the fridge so we needn't buy some more.
Do You think I may/can/ sit here?
Do you think I may smoke here?
She is 21 now, she should/can go to night clubs now.
She is 21 now, she can go to night clubs now.
Would/should you open that door for me please?
Would you open that door for me please?
You (must, mustn't, needn't) wash those carrots. They've already been washed.
You needn't wash those carrots. They've already been washed.
He may/must buy the new console now, he has been a good student.
He may buy the new console now, he has been a good student.
I am feeling terrible today. Would/shall you recomend me seomething to be more relaxed?
I am feeling terrible today. Would you recomend me seomething to be more relaxed?