3.I went to the mountain last week. = He went to the mountain last week. (What did he do last week?)
4.I will go camping next week. = They will go camping next week (What will they do next week?)
5.I moved yesterday. = They moved to a different house yesterday. (What did they do yesterday?)
6.I will have dinner with my family tomorrow. = They will have dinner tomorrow. (What will they do tomorrow?)

Eva, you didn't answer the questions for your homework. Please read the questions first before you make your answers. I added the questions after my corrections. Please check them put.
You can do better next time.^^

Teacher Wendy