He tried to deal with the ever-increasing burden of his work but finally and had to take

问题补充：

He tried to deal with the ever-increasing burden of his work,but finally and had

to take a complete rest.

A. broke away

B. broke up

C. broke down

D. broke out

答案：

A. broke away

B. broke up

C. broke down

D. broke out

解析：考查动词词组辨析。break away脱离，摆脱；break up解散；打破；break down打破；精神不支，精神垮掉；break out爆发。根据题意可知，C项正确，即最后他支持不住了。