考试时,你会不会作弊?公交车上遇到老人,你会不会让座?一张废纸,你会不会随便丢弃……。文化是每个人的心灵名片,人的行动都是内心文化的反映。这表明
Edward, you play so well. But I ________ you played the piano.
Not until I began to work ________ how much time I had wasted.
Little ________ about his own safety, though he was in great danger himself.
Not a single song ________ at yesterday’s party.
Not until all the fish died in the river ________ how serious the pollution was.