—I'm sorry to interrupt you but I don't follow you now.—Sorry I it clear about my plan.

问题补充：

—Im sorry to interrupt you, but I don follow you now.

—Sorry, I it clear about my plan.

A. didn make

B. hadn make

C. wasn making

D. haven made

答案：

A. didn make

B. hadn make

C. wasn making

(答案→)D. haven made

解析：句意：--很抱歉打断你，可是，我现在听不懂你的意思。--抱歉，我没有解释清楚我的计划。到现在为止没能解释清楚，侧重对现在产生的影响，即你没听懂。是现在完成是的典型用法。故D正确。