------You ran into Mr. Li! How did that happen? ------Well, _______ of us was looking where we were going. We came around the corner at the same time.
She was scared _______ when hearing the sound of explosion.
Most parents are not __________ the danger of their babies’ eating jelly, which causes most unfortunate incidents to happen.
Don’t turn the room __________, as I have just tidied it.A. inside B upside down C. outside D. inside down
Many people _____ the opening ceremony of 2010 World Expo, which was so amazing.
This is the very book _____ I need now.