问题详情

Jack says that he is up to his eyes at work at present and really cannot afford the time to have dinner with us.
9. What do we learn about Jack？
A. He is well-known for hard work.
B. He is pretty busy working.
C. He has overworked and hurt his sight.
D. He doesn’t like to have dinner with us. 请帮忙给出正确答案和分析，谢谢！