Were it not for friction ,we were not able to walk on this earth of ours.were,for friction,were not able to,of ours哪个错了.
问题描述:
Were it not for friction ,we were not able to walk on this earth of ours.were,for friction,
were not able to,of ours哪个错了.
答
were not able to改成should(would) be not able to
答
were not able to改为would not be able to