His children are well-behaved, those of his sister are naughty． A. as B. although C. while——青夏教育精英家教网—

摘要： His children are well-behaved, those of his sister are naughty． A. as B. although C. while D．when

网址：http://m.1010jiajiao.com/timu_id_4449127[举报]

His children are well-behaved, ________ those of his sister are naughty．