-- The traffic is busy in Harbin.

--It’s really so. When the subway      , the traffic will become better.

A finishes         B will finish        C is finished

下列各句中省略的内容补充错误的一项是[ ]

A．（吹箫人）舞幽壑之潜蛟

B．（吾）正襟危坐而问客曰

C．（曲调）何为其然也

D．（吾与客）相与枕藉乎舟中