[{"data":1,"prerenderedAt":-1},["ShallowReactive",2],{"exercise-B2-1113":3},{"preview":4,"open":14,"missing":37},{"id":5,"number":6,"total":7,"level":8,"course":9,"activity":10,"discriminator":11,"title":12,"slug":13,"instructions":14,"excerpt":15,"prompts":16,"lock":19,"access":20,"updated":21,"previous_id":22,"next_id":23,"previous":24,"next":28,"first":32},1113,3,68,"B2","reading","multiple_matching","reading_multiple_matching","Rivers of the Region","rivers-of-the-region",null,"The Saltmere is the great working river of the region. For centuries barges have carried coal, grain and timber along its broad, slow waters, and the busiest ports still load cargo onto ships heading for the sea. Almost every major city grew up on its banks, drawn by the trade it offered, and their old warehouses…",[17,18],"Which river is the longest?","Which river is used to transport goods?","login","pro","2026-10-02T14:14:49",1112,1114,{"id":22,"number":25,"title":26,"slug":27},2,"Metals That Built the World","metals-that-built-the-world",{"id":23,"number":29,"title":30,"slug":31},4,"Instruments of the Orchestra","instruments-of-the-orchestra",{"id":33,"number":34,"title":35,"slug":36},1111,1,"Bridges of the Valley","bridges-of-the-valley",false]