用could造句
问题描述：
用could造句
我需要的是肯定句和否定句各5句,当然越多越好哦~
答
He can ride a bike now,but he couldn't a few weeks ago.他现在能骑自行车了,但几星期前他不会.· A poor boy like me couldn't go to school.象我这样的穷孩子上不了学.· When my father was young he could run...