Dr Yuan makes______ possible______ one-third more of the crop in the same fields.
A.it; produce
B.it; producing
C.it; to produce
D.it; produced
网友回答
C解析本题考查make it possible to do的用法，其他不符合语法结构。make it possible to do 使做某事成为可能。 此处it是形式宾语，真正的宾语是to produce one-third more of the crop in the same fields。