✅ 各文中の 太文字 の単語が、元の問題で指定された品詞と一致しているかどうか:
(1) He performed his tasks very effectively.
・tasks → ✅ 名詞(原文「work」と同じく名詞)
・effectively → ✅ 副詞(原文「well」と同じく副詞)
👉 正しい
(2) John labored diligently in excavating a water source.
・water source → ✅ 名詞句(原文「well」と同じく名詞)
👉 正しい
(3) It takes five minutes to get from here to the train station.
・five → ✅ 形容詞(数詞として「minutes」を修飾)
・to → ✅ 前置詞(「to the station」の前置詞)
👉 正しい
(4) Nobody believes Tom, since he frequently tells lies.
・since → ✅ 従属接続詞(原文「because」と同じ働き)
👉 正しい
(5) Following two weeks, he ended his long fast.
・Following → ✅ 前置詞(原文「after」と同じ働き)
👉 正しい
(6) He boarded the express train at 9:00 p.m. once he ran for twenty minutes.
・once → ✅ 従属接続詞(「~するとすぐに」の意味)
👉 正しい
(7) Bill woke up late in the morning, so he hurried to school as quickly as he could.
・quickly → ✅ 副詞(原文「fast」と同様に動詞を修飾)
👉 正しい
(8) While we were going for a stroll, we saw a cat resting high in a tree.
・stroll → ✅ 名詞(「walk」と同じ意味)
・high → ✅ 副詞(位置を示す語として「sleeping」を修飾)
👉 正しい
(9) I had barely spoken to her before she ran out of the house.
・barely → ✅ 副詞(「spoken」を修飾)
・before → ✅ 従属接続詞(出来事の前後をつなぐ)
👉 正しい
(10) Naturally, they arrived at their destination safely.
・Naturally → ✅ 間投詞的副詞(「Why, of course」と同様の働き)
・at their destination → ✅ 副詞的表現(場所を表す「there」の代替)
👉 意味・品詞機能ともに正しい