It'll be cheap___everywhere by plane.Atravel Bto travel Ctraveling Dtravels 英语选择并说明理由

问题描述:

It'll be cheap___everywhere by plane.Atravel Bto travel Ctraveling Dtravels 英语选择并说明理由

  • to travel

  • It'll be cheap to travel everywhere by plane.

  • 坐飞机到处去旅游很便宜.

  • it 是形式主语,真正主语是to travel everywhere by plane.