---Tommy, do you know if Frank _____ to the theatre with us this Sunday if it _____?---Sorry, I have no idea.
–-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.
— Excuse me, but can I sit here? — ________. The man who sat here says he will be back soon.