和訳 彼女が着ているのを彼はまだ見たことのない衣装を彼女は着ていた。そしてそのことは彼に彼女を注意深く見つめさせる高価を持っていた。
問題文 Fill the blanks, each with a relative pronoun preceded by a preposition:
Ex. This is a house (in which) I live.
She wore a dress ( ) he had not yet seen her, and it had the effect of making him regard her attentively.
正解 in which