Choose the correct word. (Нужно вставить since, for или at ) Помогите Пожалуйста
1.We haven't met____last autumn. (since/for).
2.Mary has shared her room with her sister____four years. (since/for)
3.William has attended the Chess Clud______childhood.(since/for)
4.Elisabeth hasn't missed any classes____a long time.(since/for)
5.The tourists have shared their impressions____the exursion.(since/at)