No sooner to school the bell for the first class began this morning.A. had I got; whenB.

问题补充：

No sooner to school the bell for the first class began this morning.

A. had I got; when

B. I had got; than

C. had I got; than

D. did I get; when

答案：

A. had I got; when

B. I had got; than

(答案→)C. had I got; than

D. did I get; when

解析：考察倒装句。固定搭配no sooner…than…一…就…；其中的no是一个否定词，当否定词放在句首的时候，后面要使用部分倒装的形式。句意：我一到学校第一节课的铃声就响了。说明我先到学校，然后铃声才响起来。故铃声响起使用了began的过去时，我到学校使用过去完成时的时态。故C正确。