(travel) ______ by train is much cheaper than by air.

admin2011-01-09  27

问题 (travel) ______ by train is much cheaper than by air.

选项

答案Traveling

解析 本题考查非谓语动词。动名词可以作主语, 故travel应变成traveling。
转载请注明原文地址:https://kaotiyun.com/show/VRlK777K
0

最新回复(0)