请在第__（49）__处填上正确答案。 查看材料A.Don"t eat food

请在第__（49）__处填上正确答案。 查看材料

A.Don"t eat food in your car.

B.Don"t shout into your mobile phone on a bus or subway.

C.We all know that some behaviors are simply unacceptable

D.Many people do this on subways， but it"s really annoying

E.Getting off and on in an orderly manner can save time for all.

F.Suddenly， you feel someone leaning over your shoulder reading something with you

请帮忙给出正确答案和分析，谢谢！