(B) 用方框中所给词的填空，不必要进行词形变化。

【小题1】I’m sure _____ by train must be cheap.
【小题2】Lucy gets up as _____ as her sister every morning.
【小题3】Can the students in the back row see the blackboard ___?
【小题4】You’d better not _____ a bus to Beijing.
【小题5】In our country, most people are ready to do fund _____ for the poor children.