------Mom I don’t want to but I broke your favorite glass by mistake.------It doesn’t m

问题补充：

------Mom, I don’t want to , but I broke your favorite glass by mistake.

------It doesn’t matter. Be careful next time.

A. make you excited

B. make you down

C. put you down

D. let you down

答案：

A. make you excited

B. make you down

C. put you down

(答案→)D. let you down

解析：句意：--妈妈，我不想让你沮丧，但是我不小心打破了你最喜欢的杯子。--不要紧，下次小心点。let sb down 让某人失望，让某人沮丧；by mistake 错误地。打破杯子，让妈妈沮丧，故选D。