—Can you come to help us with our work by 5 o’clock?—I don’t know if I can help；.A. that’s

问题补充：

—Can you come to help us with our work by 5 o’clock?

—I don’t know if I can help；.

A. that’s a pity

B. it all depends

C. you are welcome

D. that’s a pleasure

答案：

A. that’s a pity

(答案→)B. it all depends

C. you are welcome

D. that’s a pleasure

解析：考查交际用语：A．that’s a pity真遗憾B．it all depends那就看情况可定了C．you are welcome不用谢D．that’s a pleasure不用谢，句意：--5点的时候，你能来帮助我们工作吗？--我不知道是否能帮忙；看情况而定。选B。