根据情景选择句子,将正确答案的序号填在括号里.

根据情景选择句子,将正确答案的序号填在括号里.
（ ）1.当你询问对方计划时,应该问：________
A. Are you a teacher?
B.Do you want to go to Shanghai?
C.What's this?
( ) 2.当你要求别人保持安静时,应该说：________
A.Pleased to mett you.
B.What a fantastic present!
C.Pleased be puiet.
( ) 3.当你在马路上遇到红灯时,应该对同行的人说：________
A.Stop! Don't go!
B.Please stand in line!
C.Go straight on!