—It’s so cold! Why not close the door?

—Sorry.It          .I’ll have it repaired soon.

A．won’t shut

B．won’t be shut

C．hasn’t shut

D．isn’t shut

天然青霉素是（）.

A．青霉素V 

B．青霉素G 

C．羧苄西林 

D．阿莫西林 

E．氯唑西林