Поставьте глагол в нужную видо-временную форму.
1) They (to make) considerable efforts to solve economic problems now.
2) They (to use) both direct and indirect channels of distribution.
3) A wholesaler already (deal) with a retailer.
4) This wholesaler (simplify) the problems of manufacturers last year.
5) Agent middlemen (receive) commissions since 1998.
1 are making
3 has dealt
5 has been receiving
Татьяна Андречейнко, молодец.
Я бы подправила ток 3) A wholesaler HAS already DEALT with a retailer.
5. ..have been receiving (agent middlemEn — множ. число)