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】：B
【题目解析】：have to do sth.不得不干某事