问题详情：
用括号内所给单词的适当形式填空。
1. The (leaf) turn yellow in autumn.
2. English (speak) here.
3. Sunglasses are used for (keep) out the sun.
4. It is (wild) known that Australia produces the best wool(羊毛).
5. The GPS map in my phone can help me avoid (lose) my way.
【回答】
1. leaves 2. is spoken 3. keeping 4. widely 5. losing
知识点：构词法
题型：完成句子
