1. If we (not work) hard, we (fail) our exams 2. My parents (be) really angry if they (see) my bedroom! 3. If you (90) shopping today, what you (buy)? 4. I (clean) the house, my parents (give) me some extra money. 5. If she (have) a party, she (invite) you. 6. Ana (study) medicine, she (become) a doctor you (do)? 7. If you (not have) any homework tonight, what (drive) to the beach this weekend. 8. If we (buy) a new car, we (give) her my message (see) Jane, he 9. If my brother (die) 10. If pollution (increase) more plants and animals

Boss: Have you typed those letters yet? 
Secretary: No, I haven't finished. …Must...I type 
all of them this morning? 
Boss: Yes, you must, I'm afraid. 
Secretary: Very well, sir. Must I also photo- 
copy them? 
Boss: No, you needn't. Eric can do that. Just ask 
him. 
Secretary: OK, I'll do that. Oh, sir. You've got an 
appointment with Mr. Lee at 6 o'clock. It's almost 5.30. You mustn't be late. 
Boss: Oh, dear! I forgot. I'll go now. 
Secretary: Do you want me to call your wife and tell her that you'll be late? 
Boss: No, you needn't do that. I'll call her.