afford, notes, volunteer, sleepy, concentrate, member, studying, wrong, points, stay up

Paula: Hi Bob. You look (1)          !
Bob: I don’t feel great, Paula.
Paula: Is there something (2)          ？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 (3)          . I (4)          
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 (5)          . After class I spent time looking through all the key (6)          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 (7)         and you don’t learn anything. Anyway you should have a weekend off.
Bob：I don’t think so. I can’t (8)         the time.
Paula: Of course you can! Why don’t you go to do some (9)         work with me? You used to be a (10)         of our Helping Team.
Bob：I know, I do need some time to relax.