—What about_____ concert?

—Coco Lee’s concert? To be honest, to buy _____ ticket of hers is out of the question at the moment.

A．the; the

B．a; a

C．a; the

D．the; a

目前我国互联网运营商主要有（）

A.中国电信

B.中国网通

C.中国长宽

D.以上都是