1. For completing the course, it is strongly recommended that you record

           (A)                                                     (B)

 how long it takes to complete the first lesson or two, and use this information

    (C)                                                                 (D)

 to prepare your study plan.

답은 (A)로 알겠는데..

(D) 에서 or two가 맞는건가요?

등위접속사 or 뒤에 앞에 first 처럼 서수가 와야 하는게 아닌가요??

2. Some refining companies are in settlement talks with the administration,

                                                                         (A)

while other companies have resisted the effort to bring them into

  (B)                                                                      (C)

the compliance with pollution standards.

     (D)

에서 답은 (D)인데 어케 고쳐야 하나요?