Подчеркните сказуемое следующих предложений, укажите время, видовременную группу, залог.
1. Modern medicine has been making extensive use of various antibiotics.
2. Russian science had produced a series of new drugs before new generation of antibiotics made its appearance.
3. It has been established that the composition of its molecule includes iron.
1)has been making (present perfect continiuos)
2)has produced (past perfect)
3)has been established (present perfect)