althoughheisveryold,buthestillexerciseseveryday[改错】becauseheishelpful,soheoftenhelpsothers.[改错】
2020-11-30 117次 反馈错误 加入收藏 正确率 : 100%
题目内容：
although he is very old,but he still exercises every day[改错】
because he is helpful ,so he often helps others.[改错】
优质解答
1.去掉but
2.去掉so
本题链接：
