题目内容：

John regretted ________to the party last week, for it seemed very funny. A. not going B. not to go C. going D. to go
The boy______ at the corner is my cousin. A. who standing B. standing C. stands D. who stand 3 Though famous throughout the world, Yuan Longping, ______ with his simple life is still busy ________his super-hybrid rice. A. satisfied; improved B. satisfying; improving C. satisfied; improving D. satisfy; to improve 21. Only____________ succeed in learning English. A. by working hard we can B. by working hard can we C. we can by working hard C. can we by working hard 22. The teacher was so _______that the students should give such an_________ answer.

优质解答

regret to do sth.很遗憾地／抱歉地做...（事情还没有做）
regret doing sth.很遗憾/后悔做了...（为已经做过的事而感到...）
所以选B
约翰很遗憾上周没有去参加派对,因为它看起来很有趣