◎ 题干
—Do you like running?
—Yes. It helps to build _______ my leg muscles.
[     ]
A. for
B. of
C. up
◎ 答案
查看答案
◎ 解析
查看解析
◎ 知识点
    根据魔方格专家分析,试题“—Do you like running? —Yes. It helps to build _______ my leg muscles. [ ]A. for B. of C. up …”主要考查了你对  【动词短语】  等知识点的理解和应用能力。关于这些知识点的“档案”,你可以点击相应的链接进行查看和学习。