Ⅰ. 根据句意及首字母或汉语提示完成单词（10分）
1. Have you seen the h_______ stones at the Stonehenge?
2. Twenty kilometres is not a long d_______ if you drive there.
3. After a short while, the clouds d_______ and the sun came out.
4. We shouldn’t give up though we _______ (面对)great challenges.
5. The temperature in Harbin is very low in winter, usually _______ (在……下面) zero.
