You must act up to your promise.(你必須實踐自己的諾言。)

Please act up the dialogue in pairs .(請兩人一組表演這個對話。)

If you act up to your promise, we are going on cooperating with you.(如果你遵守你的諾言，我們將繼續同你合作。)

They expect some high school students to act up but figure those who get to college will behave more maturely.(他們以為中學生會調皮搗蛋，但覺得上了大學的人行為舉止會成熟些了。)

Act up to your belief.(按你的信念辦。)

We should act up, push myself, supervision and mom and dad, do good members of society.(我們應該行動起來，督促自己，監督爸爸媽媽，做社會的好公民。)

The car 'engine is beginning to act up .(汽車引擎開始出毛病了。)

The car's engine is beginning to act up.(這輛車的引擎開始出毛病了。)

Curriculum leadership requires structure to maintains and act up.(課程領導需要一定的組織結構來維持和運作。)

The bird said, I'm sorry for my behaviour and will never act up again.(小鳥說：“我很抱歉我的行為，我將不再這樣做了。”)