although he is very old,but he still exercises every day[改错】because he is helpful ,so he often helps others.[改错】

分类: 作业答案 • 2022-01-02 15:44:32

问题描述：

although he is very old,but he still exercises every day[改错】
because he is helpful ,so he often helps others.[改错】

答

1.去掉but
2.去掉so