__ smoke here ,dad .Smoking is banned in public piacesdo not bedo notnot to bebe not要有理由
问题描述：
__ smoke here ,dad .Smoking is banned in public piaces
do not be
do not
not to be
be not
要有理由
答
Do not
理由：这是一个祈使句的否定句。
不过，一般用Don't比较常见。Do not就是强调了。
答
Do not
祈使句的否定句是：Don't (= Do not ) + 动词原形