用所给词的适当形式填空。 1. Which is (high), this tree or that tree? 2. This problem is (easy) than that one. 3. My ruler is too short. Could you give me a________( long) one? 4. Hong Kong has seven ( million) people. 5. She is (busy) today than yesterday. 6. She is good at (swim). 7. We are looking forward to (have)a holiday next week. 8. My book is newer than (Tony). 9.-Would you like (go) to the party at your friend's home? -Yes.I'd love to. 10. Li Ming____(be) 18 years old next year.