Paula: Hi Bob. You look ____ !
Bob: I don’t feel great, Paula.
Paula: Is there something ____ ？Have you been to the doctor’s?
Bob：No, I’m not ill. I’m just a bit tired. I’m probably not sleeping enough.
Paula: You shouldn’t go out so late then.
Bob：I’m not going out at all actually. I’m too busy ____ . I ____ 
last night.
Paula: Staying up? But the exams are two months away.
Bob：I know, but I’ve got a lot to do. I didn’t do much last term. I wish I’d been more like you!
Paula: Well, yeah, I went to every class and I took lots of ____ . After class I spent time looking through all the key ____ I made during class.
Bob：Have you started preparing for the exams yet?
Paula: Not yet. I’ll probably start next week, but I’m not going to stay up all night doing it! If you don’t sleep enough, you can’t ____ and you don’t learn anything. Anyway you should have a weekend off.
Bob：I don’t think so. I can’t ____ the time.
Paula: Of course you can! Why don’t you go to do some ____ work with me? You used to be a ____ of our Helping Team.
Bob：I know, I do need some time to relax.