1. He always covers up for his friends when they make mistakes.
他总是为他的朋友们遮掩错误。

2. She was willing to cover up for her colleague's absence at the meeting.
她愿意为同事在会议上缺席的情况掩饰。

3. The company tried to cover up for the CEO's embezzlement scandal.
公司试图掩盖首席执行官的挪用公款丑闻。

4. I can't believe you would cover up for your brother's lie.
我无法相信你会为你哥哥的谎言掩护。

5. The teacher decided to cover up for the students who didn't finish their homework.
老师决定为那些没有完成作业的学生遮掩。

6. It's not right to cover up for someone who is constantly making mistakes.
为那些不断犯错的人掩盖是不对的。