Choose the correct modal verb.

1 A: Would you like to buy an animal adoption certificate?
B: Yes, I certainly ... .

2 A: I use silver paper to wrap my packed lunch.
B: You really ... use silver paper as it produces waste.

3 A: ... I use a reusable lunchbox instead?
B: Yes, of course.

4 A: ... you like me to take the vegetable waste out to the compost heap?
B: No, you don't have to. Your brother has already done it.