问题
填空题
根据句意，用所给单词的适当形式填空。
1. You should clean your room (one) a day.
2. Would you like to go (ski) with us?
3. Tommy is very (happy) because he lost his bike.
4. Does he look (smart) than Wang Lei?
5. Alice is the (pretty) of all the girls.
答案
1. once 2. skiing 3. unhappy 4. smarter 5. prettiest