题目

每个篮球38元，每个足球30元，王老师买足球和篮球各买了a个，买足球比买篮球少花________元． 答案：【答案】8a【解析】【解答】38a-30a=8a（元）故答案为：8a.I am up to my ears in work, so I have no time to telephone my parents. The underlined phrase means“________”. A. am very busy with my work　　　　   B. have trouble in ears C. am out of work　　　　　　　　　　　　　　  D. have no work to do