The boy was so careless that the glass fell from his hand and it on the floor.A. broke i

问题补充：

The boy was so careless that the glass fell from his hand and it on the floor.

A. broke in

B. broke down

C. broke up

D. broke out

答案：

A. broke in

B. broke down

(答案→)C. broke up

D. broke out

解析：句意：这个男孩太粗心了，镜子从他的手中落在地板上，摔碎了。broke in闯入broke down垮掉 broke up摔碎 broke out爆发，选C。