Modal verbs

Use can, can't, could, couldn't, don't have to, doesn't have to, must and mustn't:

- I _______ swim because I learnt when I was younger.

Use can, can't, could, couldn't, don't have to, doesn't have to, must and mustn't:

- People __________ speak while eating, but there are some people who still do it.

Use can, can't, could, couldn't, don't have to, doesn't have to, must and mustn't:

- I'm sure you _________ write when you were two years old.

Use can, can't, could, couldn't, don't have to, doesn't have to, must and mustn't:

- If the teacher is speaking you _____________ interrupt.

Use can, can't, could, couldn't, don't have to, doesn't have to, must and mustn't:

- If she's not feeling well, she _______________ come to the party.

Use can, can't, could, couldn't, don't have to, doesn't have to, must and mustn't:

- You __________ leave without my permission, that's all.

Use can, can't, could, couldn't, don't have to, doesn't have to, must and mustn't:

He _________ climb really fast when he was twenty, but now he's out of shape.

Use can, can't, could, couldn't, don't have to, doesn't have to, must and mustn't:

- Students ___________ listen to their teachers in class, it's mandatory.

__________ you help me, sir? I cannot find the train station.

People who ________ speak a second language usually find difficult to start a new life abroad.