it was difficult __ the railroad at that time.a.built b.to b

moreandmorea2022-10-04 11:39:544条回答

it was difficult __ the railroad at that time.a.built b.to build c.build d.building

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aheng1986 共回答了17个问题 | 采纳率94.1%: 在当时,修建铁路是很困难的
有问题再问吧; 1年前

lpf000 共回答了433个问题 | 采纳率: B; 1年前

卖烟nn 共回答了7527个问题 | 采纳率: b.to build
It's +形容词+to do sth 句型; 1年前

3176640 共回答了260个问题 | 采纳率: B在那时很难造出铁路; 1年前

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