The two pictures look the same to me. It’s hard to ____ one from the other.
When the students were playing games on the playground, Jim suddenly stopped _____and began to cry, so we stopped _______ what was wrong with him.
–-You should be _______ careful when you take the chemistry exam.---I agree. In this way, I will make _______ mistakes.
Tom is weak in physics. He always feels _______ before he takes a physics test.
The second book ______I want to read is Business @ the Speed of Thought.
–There is _______ interesting book on the teacher’s desk. --Oh, ______ book is Wei Fang’s.