—Say, Jane, will you come with me to the game Friday?  

—__________,Bob, but I promised Mary I'd go with her.    [ ]

A. My pleasure    

B. Thanks  

C. Take it easy    

D. Forget it

Leonurus属的特征是：

A．花萼上唇2齿，下唇3齿

B．花萼上唇3齿，下唇2齿

C．花冠上唇全缘，下唇3裂

D．花冠上唇3裂，下唇全缘

E．雄蕊2强 雄蕊2枚