Many workers/ belong/ trade unions/ provide/ support/ workers/ disputes/ employers.Đoạn văn58/60Many workers/ belong/ trade unions/ provide/ support/ workers/ disputes/ employers.Many workers belong to trade unions, which provide support for workers in disputes with employers. Many workers belong to trade unions, that provide support for workers in disputes with employers. Many workers belong to trade unions, who provide support for workers in disputes with employers. Many workers belong to trade unions whose provide support for workers in disputes with employers.Giải thíchĐáp án đúng là a.