. “Would you like to turn that music down I‘m writing a letter.”“_____.”

Must I clean my room now, Mum—_______. You can do it tomorrow.

Have you heard about the event of vaccine（疫苗）—Yes. It has caused a(n) _________ influence on medicine safety.

Leave your key with a neighbor ______youlock yourself out one day．

― It is reported that Americans eat too much protein each day. ―They eat ______as they actually need.