A、  B、  C、  B问题在陈述句后面附加了“right?”，以确认前面叙述的内容。问的是他是不是很愿意去伦敦的分社，(B)给出了肯定的回答，因此是最合适的答案。(A)与题意不符， (C)使用了与branch发音相近的be

We need to start immediately, don’t we?
(A) Yes, if we want to be on time.
(B) Twenty minutes, I suppose.
(C) Work starts at 9 o’clock, usually.

He is willing to go to the London branch, right?
(A) He left, just now.
(B) Yes, he said he’d be delighted.
(C) He’s going to the beach.