虽然我浑身酸痛，可是不干活儿不行呀! （  ）

虽然我浑身酸痛，可是不干活儿不行呀! （  ）

A.Though I still ached all over, I must work.

B.Though I still ached all over, I had to work.

C.Though I still ached all over, I cannot but work.

D.Though I still ached all over, but I had to work.

正确答案是B