Billy: I've been fixing the computer for over three hours, but it still doesn't work.

Nana: Why don't you take a rest and try ______? Maybe you'll do better then. [ ]

A. early

B. finally

C. later

D. once

三甲复脉汤是在加减复脉汤中（）

A.去麻仁加牡蛎

B.去麻仁加山甲

C.加龟板、牡蛎、龙骨

D.加牡蛎、龟板、鳖甲

E.加牡蛎、龟板、山甲