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.
