—I wonder why he has been acting so strangely these days.—Recent pressure at work may his behavior.
---This passage is difficult for me. Could you please explain it to me?---I’m afraid I have to say sorry, but the book is ________ my understanding.
I know a little bit about Italy as my wife and I __________ there several years ago.
_______ opening ceremony of the 28th Beijing Olympic Games really gave the world _________ big surprise.
Between the two generations, it is often not their age, _________ their education that causes misunderstanding.
He studied very hard all the time because he didn’t want to __________in his studies.