完成下列对话A：Welcome to our restaurant.( )B:I like some beef and

完成下列对话
A：Welcome to our restaurant.( )
B:I like some beef and vegetables.May I(
A:Sorry,you can not.Look at that sign.
You ( )smoke here.
B:I am sorry.
A:It is time for bed,Dick.You must( ).
B:But I am not sleepy,Mum.May I(
A:Ok,you can watch it for( ).
B:Thank you,Mum.