The last pen was ____ found .A.in end B.by the end C.finally D.at the last

C
Bfinally是副词啊，不是不能放中间，只能放举手的吗是经常放句首，不是必须放句首。例如：The word was finally given for us to get on board... 终于通知我们登乘了。The food finally arrived at the end of last week and distribution began... 食品总算在上周末运到并开始分发。