---Has Tom finished his composition yet?

　 ---I have no idea, he _____ it this morning.

A．would write 　　

B．has written 　　

C．wrote

D．was writing

电话银行系统中可以办理以下哪项业务（）

A.股金查询

B.网银签约

C.支付宝签约

D.挂失