Lesson 26 47点。 これは間違いなのか？ 次の英文を（）内の語句を用いて現在完了形にせよ。 He is working here. (for 5 years) 「He has been working here for 5 year.」と回答したが、正答は「He has worked here for 5 year.」自分は、書き換え問題だか…