维度1 单词拼写
1.__________(事实上), all languages change and develop when cultures meet and communicate with each other.
2．It is better for people to have an ________(额外的) 20－minute walk every day.
3．The ________(运动) calls for people to protect the environment.
4．These parents even ________(放弃) their jobs to follow their children into the campus.
5．The________(争论) over whether museums should be free is a big one right now.
6．They have been working for a charity organization since they g________ from university.
7．I like playing the guitar and keep my s________ of training for it.
