I know the exam isn’t difficult I shall not worry about it.A. As long asB. As far asC. I

问题补充：

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

答案：

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。