You must signal which way you are going to turn. 你要朝哪个方向转，必须发出信号。 You're a great help, I must say! 我得说，你可没少帮忙！ There must be a way around the problem. 肯定有解决这个问题的办法。 The work must be completed within a certain time limit. 这项工作必须在一定期限内完成。 There is a growing realization that changes must be made. 越来越多的人认识到改革势在必行。 上一篇：理科生第二专业学什么好 下一篇：to是介词后面加什么形式 |