He tried to cope with the ever-increasin
题型：选择题
问题：
He tried to cope with the ever-increasing burden of his work, but finally he _____ and had to take a complete rest．
A．broke in
B．broke down
C．broke out
D．broke up
He tried to cope with the ever-increasing burden of his work, but finally he _____ and had to take a complete rest．
A．broke in
B．broke down
C．broke out
D．broke up