비디오 자료 : Click for video 비디오자료 New Words arduous Requiring much effort; very difficult canny shrewd and careful; watchful or one's own interest climax the highest point; the greatest moment or event endorse To sign the back of a check before cashing it in or depositing it; to approve of; or support;To be favorably associated with a product in [...]

강좌:미국단어 7학년 13~16과 > 단어7_9