1. When did you begin to c________ stamps? 2. I'm going to o________ an English speech contest. Can you join? 3. There are a lot of beautiful photos in my a________. 4. I get a________ when the phone rings while I'm sleeping. 5. His bike is lost. So he has to walk to school i________. 6. Joe has five pens and________(几个)pencils. 7. What should I do? Could you give me some________ (建议)? 8. It's impolite to cough loudly in________(公共场所). 9. Can you see the words________(清楚地)? 10. Her English teacher speaks________(完美的)English. She is a good teacher.