Though he is oid,but is still working hard.找错并改正
问题描述：
Though he is oid,but is still working hard.找错并改正
答
but后面的is去掉
这是最简单的改法
或者
在Is前面加he
呵呵，希望可以帮到你，有不懂的还可以问我^^
答
去掉though或者but其中之一.
所以就是：
Though he is old,he is still working hard.
或者He is old,but he is still working hard.