[{"data":1,"prerenderedAt":-1},["ShallowReactive",2],{"exercise-B2-4413":3},{"preview":4,"open":12,"missing":30},{"id":5,"number":6,"total":7,"level":8,"course":9,"activity":10,"discriminator":11,"title":12,"slug":12,"instructions":13,"excerpt":14,"prompts":15,"lock":18,"access":19,"updated":20,"previous_id":21,"next_id":22,"previous":23,"next":25,"first":27},4413,52,60,"B2","writing","letter","writing_b2_letter",null,"You have seen this advertisement on an environmental volunteering website.","Marine Conservation Volunteers Needed in Greece Join our two-week summer project to protect the coastline and the animals that live there.",[16,17],"Beach clean-ups","Sea turtle monitoring","login","pro","2026-10-02T14:14:49",4412,4414,{"id":21,"number":24,"title":12,"slug":12},51,{"id":22,"number":26,"title":12,"slug":12},53,{"id":28,"number":29,"title":12,"slug":12},4362,1,false]