— Welcome to ______ school.— Thanks. Your school is very nice.
---- 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.
---- There is _______ interesting book on the teacher’s desk. ---- Oh, ______ book is Wei Fang’s.
—Where are you? I can’t see you in the hall. —______. I’m just one block away.
—______ did Samuel stand by the window so long? —To see what would happen.