英语的几道介词填空
In high buildings ,people go up and down_____a lift
most students go home_____school.but some still stay _____school.
lt has the fewest days___________the twelve months.
whales can stay__________the water __________a long time.they come up only _________air and their noses are ____________  the top of  their heads.
我是中学生,不需要太难的介词.