---The pretty girl is deaf. I wonder how she can dance so well without hearing the music!---Yeah, I know this girl.She’s been very ________ since she began to learn to dance.A.hard-workingB.carefulC.kind-heartedD.poor
网友回答
A解析这里用hard-working符合句意：从她开始学跳舞就一直很刻苦。