—Mr Black，what about my application?—Oh，I regret________you that it hasn’t been successful.

--- What are you busy with? ---The exhibition ____ in the city next week．

When he woke up, he found himself ____ by a group of villagers.

 ________ the opportunity to speak at the graduation ceremony made him overjoyed.

— I regret _______ you that you failed the exam.  — How I regret _______ so much time playing computer games.