[{"data":1,"prerenderedAt":-1},["ShallowReactive",2],{"exercise-C2-4948":3},{"preview":4,"open":12,"missing":27},{"id":5,"number":6,"total":7,"level":8,"course":9,"activity":10,"discriminator":11,"title":12,"slug":12,"instructions":12,"excerpt":13,"prompts":14,"lock":15,"access":16,"updated":17,"previous_id":18,"next_id":19,"previous":20,"next":22,"first":24},4948,47,60,"C2","writing","essay","writing_c2_essay",null,"Restoration brings masterpieces back to life Over the centuries, paintings and frescoes become obscured by dirt, discoloured varnish and clumsy repairs, so that we no longer see them as their creators intended. Skilled restoration, supported by modern scientific analysis, can reveal colours and details that have been…",[],"login","pro","2026-10-02T14:14:49",4947,4949,{"id":18,"number":21,"title":12,"slug":12},46,{"id":19,"number":23,"title":12,"slug":12},48,{"id":25,"number":26,"title":12,"slug":12},4902,1,false]