It is only when you nearly lose someone fully conscious of how much you value him.A. do y

问题补充：

It is only when you nearly lose someone fully conscious of how much you value him.

A. do you become

B. then you become

C. have you become

D. that you become

答案：

A. do you become

B. then you become

C. have you become

(答案→)D. that you become

解析：考查强调句：句意：只有当你差点失去了某个人，你才能充分认识到你是多么地在乎他。这是强调句，结构是：It is/was+强调部分+其余部分…，这里强调的是时间状语only when you nearly lose someone，判断强调句的方法是把强调句结构去掉，这句话仍然成立，去掉强调结构这句话是成立的，是only when you nearly lose someone ，you become fully conscious of how much you value him.选D。