fail|failed|fails|failing

他昨天未能参加足球训练。

He ___failed to turn up for football practice yesterday.

他未能提到我们不会为此工作获得报酬。

He ___failed to mention that we wouldn't be paid for the work.

你的广告也未能提到没有折扣的事实。

Your advertisement also ___failed to mention the fact that there were no discounts.

我听说大多数人考试会不及格两三次。

I was told most people ___fail the exam two or three times.

如果她不学习，她所有的考试都会不及格。

If she doesn't work, she'll ___fail all her exams.

很多人第一次考驾照都不及格。

A lot of people ___fail their driving test the first time.

如果刹车失灵，那会很危险。

It would be dangerous if the brakes ___fail.

我担心我的计划会失败。

I'm afraid my plan will ___fail.

如果她不学习，她所有的考试都会不及格。

If she doesn't study she'll ___fail all her exams.

如果关键部件失灵，整个系统可能会关闭。

If a critical component ___fails, the entire system might shut down.

这种种植番茄的方法从未失败。

This method of growing tomatoes never ___fails.

这名学生未能赶上项目的截止日期。

The student is ___failing to meet the deadline for the project.