Permission and Obligation

Which of these modal verbs do we use to ask for and give permission?

• Can

• Should

• May

• Culd

Which of these sentences is incorrect?

• Can I borrow your pen, please?

• May I leave the room for a moment?

• Must I open the window, please?

• Could you allow me to use your computer?

What do we use to talk about an already established permit?

You ___ finish your homework before going out.

• Must

• Must not

• Should

• Need to

You ___ buy a ticket to enter the concert.

• Must

• Have to

• Must not

• Should

You ___ touch the paintings in the museum.

• Have to

• Must not

• Need to

• Should

If you want to stay healthy, you ___ eat more vegetables.

• Must not

• Should

• Need to

• Have to

I _____ text back but I was too busy

• Ought to

• Was supposed to

• Were to

• Was oughted to?

She's ______ start screaming now, but I don't hear anything

• Started

• Was supposed to was

• Supposed to

• Wah

You _____ return that ball

• Should

• Ought to

• Was should to

• Was ought