China has 34 high-speed rail lines,____ one-tenth of the countrys total railway operation mileage.%Dª.making upB.ha

China has 34 high-speed rail lines,____ one-tenth of the countrys total railway operation mileage.%Dª.making upB.having made upC.make upD.to make up
英语人气:287 ℃时间:2020-02-03 12:03:05
优质解答
我觉得选A,动名词短句作伴随状语.
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