问题补充：
After working until midnight for two weeks, he finally and had to stay in the hospital.
A. broke up
B. gave in
C. broke down
D. gave up
答案：
A. broke up
B. gave in
(答案→)C. broke down
D. gave up
解析：A. broke up分手，B. gave in屈服，C. broke down崩溃，D. gave up放弃，句意：在连续两个星期工作到午夜后，他最终累倒了，不得不住院。所以选C。
