I’m concerned we are going to take an exam in a month.A. As long asB. As far asC. Just as

问题补充：

I’m concerned, we are going to take an exam in a month.

A. As long as

B. As far as

C. Just as

D. Even if

答案：

A. As long as

(答案→)B. As far as

C. Just as

D. Even if

解析：考查连词短语：A. As long as只要，B. As far as据…就…C. Just as就像，D. Even if即使，句意：据我所知，这个月我们要参加考试。As far as I’m concerned据我所知。选B。