1·You must act up to your promise.
你必须实践自己的诺言。
2·You must act up to your promise.
你必须履行自己的诺言。
3·The car's engine began to act up.
汽车的发动机开始出毛病了。
4·Please act up the dialogue in pairs .
请两人一组表演这个对话。
5·Act up to your belief.
按你的信念办。
6·The car's engine is beginning to act up.
这辆车的引擎开始出毛病了。
7·The car 'engine is beginning to act up .
汽车引擎开始出毛病了。
8·But you didn't act up to your principle.
但你并没有按你的原则办。
9·Continually heavy rain made some rivers act up.
连续不断的大雨造成一些河流泛滥。
10·Watch Ricky.He sometimes likes to act up in class.
注意里基，他有时喜欢在课堂上捣乱。