基础数据业务客户交付的主要内容包括（）。

A.开通测试、

B.提供测试报告、

C.业务手册、

D.现场培训。

Not until ___to do my homework ____ how much time I had wasted playing computer games.

A．I began; I realized

B．I began; did I realize

C．did I begin; I realized

D．did I begin; did I realize