小题1:fashionable clothes
小题2:Saving
小题3:To save the things he used
小题4:To recycle the textbooks they are using every day
小题5: “useless people”
小题1:fashionable clothes
小题2:Saving
小题3:To save the things he used
小题4:To recycle the textbooks they are using every day
小题5: “useless people”