115. With some advance -------, Pamela will surely save a lot of time.

a. plan

b. planners

c. planned

d. planning

답d. planning

-a. plan이 안되는 이유를 모르겠습니다. plan은 동사도 되고 명사도 되지 않나요?ㅠㅠ

150. The guest list for the event -------. I took care of that this morning and also sent invitations to major broadcasting companies and newspapers to ensure full media coverage of the opening ceremony.

a. will be updated

b. has been updated

c. had been updated

d. is being updated

답b. has been updated

-c. had been updated는 왜 안되나요? 뒷 문장이 과거형 동사이고, 앞에 문장이 먼저 일어난 일이니까

has보다는 had가 맞지 않을까요?

아시는 분 답변 부탁드릴게요ㅠㅠ