Definition: to not do what is necessary or expected Level: B2
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.
