八年级上英语第四单元练习题.单项选择 ( )1.The girl sings . A.beautiful,beautiful B.beautifully,beautifully C.beautiful,beautifully D.beautiffully,beautiful( )2.China is one of in the world. A.larger country B.larger countries C.the largest countries( )3. You are _ now,Victor.So you should wash your clothes by yourself. A.young enough B. enough old C. old enough( )4. The weather in Harbin