Expo 2010 Shanghai China will offer ____ wonderful opportunity for ____ cross - culture dialogues.
By the time I swa the angry expression on his face, I ______ exactly what I was having to face. But not for a moment _______ I should quit.
It’s high time we _______ to the theater.
Let’s clean the classroom, ________?
— My sons are not a little restless. — Oh? Boys _______ be boys.
— Why didn’t you give a hand to the boy? — I _______, but he strggled to his feet before I tried to.