— Mr Smith wants to know whether you went to meet him at the station yesterday.

— Yes. We______ in the station's waiting-room _____ evening. But he didn't show up.  [ ]

A. stayed; until

B. didn't stay; until

C. stayed; not until

D. not stayed; until

商品的生产者或经营者为邀请对方向自己订货而发出的商品目录单、报价单以及一般的商业广告的行为，属于（）。

A.要约邀请

B.反要约

C.要约

D.承诺