基础语言知识;根据所给提示及句意，写出句中所缺单词，使句子完整正确。
1.__________ (地理) can help us know much about the weather and the area of China.
2. There are no __________ (原因) for you not to do your homework.
3.What ________ （别的）would you like to buy?.
4.We do after-school _________ (活动) in the afternoon after class.
5. Do the girls have _________ (舞蹈) lessons in Zhenjiang Chongshi Girls’ School ever
y week?