... jumping and throwing competitions continued, however, on an informal basis inmost civilized cultures, often as a part of military training. Interest in the Olympics was revived when scientists ... chemical fertilizers and pesticides, sewage. The Mediterranean is alreadynearly dead; the North Sea is following. If nothing is done about it, one day soon nothing will be ableto live in the ... defining relative clauses, relativepronouns with prepositions, relative clauses replaced by participles and to infinitives, omissionof relative pronouns, cleft sentences)6. Ngữ âm:- Nhận biết...