根据句意及所给提示完成单词。 1. That sounds i______. I like it very much. 2. —How o______ do you come to school late? —Never. 3. The teacher gave us some ______ (建议) on how to learn English. 4. I had a toothache. So I had to go to the d______. 5. What are you ______ (计划) to do there? 6. ______ (袋鼠) come from Australia. 7. It's i______ for us to learn English well. 8. U______, he was hurt (受伤) in the car accident. 9. We should try to keep the b______ of nature. 10. The workers ______ (建设) a bridge over the river.