—I’m afraid I couldn’t go to your birthday party.I have a test next Monday.

—Oh，       ！You’re my best friend and you must be there！

A．go ahead

B．come on

C．you needn’t

D．it doesn’t matter

肩胛骨的下角平对的部位是（）

A.第2肋

B.第3肋

C.第7肋

D.第8肋

E.第9肋