Complete the interview with an appropriate modal verb.
Tony: I've been going running every day for nine days, but my legs don't hurt at all. Do i really (1) to have a rest?
Jenny: You (2) wait until your legs hurt to have a rest day - that's asking for an injury. No matter how you feel you absolutely (3) rest once a week. Of course you (4) sit at home all day! You (5) go for a short walk to stretch your legs, but nothing too energetic. And ideally you (6) have a leg massage once a month.
Jason: It is OK to go running on baseball boots? They're much cheaper than proper running shoes.
Jenny: You (7) wear baseball boots or other soft shoes for running as this (8) lead to serious injury. A friend of mine who had been running with baseball boots (9) have a knee operation last year. You (10) buy an expensive pair, but you do (11) ensure that they offer proper protection for your heels and your ankles. Maybe you (12) think about buying some new shoes in the sales.
