Question

Cells either divide too fast or at the wrong time, ________ difficult for the body to function ________.

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A．making it; properly

B．make it; proper

C．making that; proper

D．make that; properly

Answer 1

答案：A
解析：

现在分词作伴随状语，而且it是形式宾语，真正的宾语是for the body to function，所以用making it；function作为动词，修饰语应用副词，所以用properly。