题目内容：

you mustn't smoke here(祈使句')谢谢了,
you should be quiet.祈使句') why not have a rest?祈使句') let us go swimming.（改为反疑问句） let's play a game..（改为反疑问句）

优质解答

可分别改为：Don`t smoke here !Be quiet,please!Have a rest ,please.!Go swimming,please!Play games together!