Official Explanation
The sentence says that Lovia had never been interested in travel, but she is going to Thailand. Her decision would come as a “surprise” to her friends, and choice (B) astonishment is correct for blank (i). There is no evidence to support the idea that her friends are feeling either delight (A) or dismay (C) about her decision. You need a neutral word for this blank. Lovia will be abroad for a year, so the choice that fits blank (ii) is (D) sojourning (“staying temporarily”). This word is related to journey, which also relates to travel, and to journal. You might think of a personal journal as a record of one’s “trip” through life. She is not (E) retiring because she will be working as a teacher. (F) persevering means “being persistent” or “overcoming obstacles,” and nothing in the sentence indicates that she will encounter adversity.
Answer: B,D