Ⅰ. 根据句意及首字母或汉语提示完成单词 （10分）
1. My old grandfather lived in a_____ house a the trees.
2. Welcome to my city and I wish you have a p_____ time here.
3. Old _____ (家具) is very expensive in some places.
4. We can plant _____ (玉米) in our country.
5. It’s important to save _____ (能源).
