问题补充:
The large family is really a heavy on his shoulder, so he has to work day and night.
A. job
B. challenge
C. load
D. weight
答案:
A. job
B. challenge
(答案→)C. load
D. weight
解析:A. job工作 B. challenge挑战 C. load负担 D. weight重量;句意:这个大家庭对他来说是个大的负担压在他的肩膀上,所以他不得不夜以继日的工作。故选C