填was,因为sixty miles指的是一段距离,所以看成是单数主语,而且谓语动词之后有a great distance,句尾有in the past,所以要用was
Sixty miles ( was ) a great distance to cover in the past.
etermined that nothing should be change
was因为sixty miles指的是一段距离,所以看成是单数主语,而且谓语动词之后有a great distance,句尾有in the past,所以要用was
追问追答
is