Commonly used time order signal words include after, before, finally, first, meanwhile, because and so on. 
A、正确
B、错误
Commonly used time order signal words include after, before, - 3 Narrative Wri... - 大学英语写作(一)——记叙文、描写文、应用文 - 融优学堂 | 大学网课搜题引擎