题目

____________ great help, I could get rid of all the difficulty and succeeded. A. Offered                       B. Having offered     C. Being supplied                 D. Having supplied   答案：A此题考查的是省略的用法。前面的分句省略的主语为I，所以动词要用被动。10．解方程．$\frac{5}{9}$x-$\frac{1}{2}$x=2                        7x-$\frac{4}{5}$=$\frac{5}{6}$．