唐朝天宝初年,______乘船五渡东海挫败,几度死里逃生,历经12年磨难,虽双目失明,信念仍不减当年,六渡沧海终于成功,终老日本,成为一代宗师。
参考答案:鉴真和尚
This machine, _____ for many years, is still working perfectly. [ ]
A. after which I have looked
B. which I have looked after
C. that I have looked after
D. I have looked after