🔁 関係代名詞 ・ ミオ
TOEIC Part5文法問題 ミオ: Q96（関係代名詞）
The software update includes several new features ___ improve overall performance.
The software update includes several new features ___ improve overall performance.
答えを見る
正解: B) that
The antecedent is 'several new features' (a thing), and the blank is followed by the verb 'improve', so the subjective relative pronoun 'that' is correct ('which' would also work). 'What' includes its own antecedent and can't be used when one is already present. 'Whose' is possessive and needs a noun after it. 'Whom' is used for a person as antecedent in the object case.