By the time I I realized that I had left my umbrella in the shop.A. arrived at homeB. re

问题补充：

By the time I , I realized that I had left my umbrella in the shop.

A. arrived at home

B. reach home

C. got to home

D. arrived home

答案：

A. arrived at home

B. reach home

C. got to home

(答案→)D. arrived home

解析：句意：当我到家的时候我意识到我把我的雨伞落在商店了，By the time引导，并且主要用于过去完成时从句（by the time +过去式），主句（主语+过去完成时）到家应是arrive home= reach home=get home,根据时态故选C。