感谢你一直以来对我学英语的帮助,用英文怎么说

Question

假如你叫Nancy，有一个叫Mary的美国笔友，现在你正给她写信，感谢她一直以来对你学英语的帮助，然后介绍你家人现在的情况

Answer 1

hank you for helping me to learn English，Mary

Answer 2

Thank you has been helping me learn English. My family is healthy. Work very well.

Answer 3

Thank you for your help with my English study all the time.

Answer 4

Thank you for helping me with my English？