I know the exam isn’t difficult, I shall not worry about it.
A. As long as
B. As far as
C. In case
D. Even if
网友回答
A. As long as
(答案→)B. As far as
C. In case
D. Even if
解析：
试题分析: 句意：就我所知这次考试不难，我不用对此担心。A只要；B就……所知；C万一；D即使。as far as sb know “据某人所知”,根据句意可知答案选B。