Ⅰ.根据句意、汉语和首字母提示完成单词
1．We often do afterclass a______ at school.
2．Look！A b______ is in the tree.
3．Riding b______ is good for our environment.
4．Now peopl e move to the new b______ and they're very happy.
5．His father owns a factory and he is a t______.
6．Please tell me the ______(差别) between the twins.
7．He had an ______(雨伞) in his hand.
