动词填空： 1. My hometown _________ (change) a lot since I was 8 years old. 2. Noise pollution _________ (be) also a big problem now. 3. They will go _________ (boat) tomorrow. 4. Ben ________ (clap) his hands while the performers were marching across the park. 5. I saw Lily ________ (fly) the kite in the park at 10 this morning. 6. It's highly possible that I'll go fishing instead of ________ (swim). 7. You use this set of keys for _________ (type). 8. I ________ (tell) that there would be a meeting the next week. 9. Miss Gao said that the Red Cross ________ (start) in 1863. 10. It is necessary for you _________ (walk) the dog in the park once a day.