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.

semachelovekgood2 semachelovekgood2    2   13.04.2020 12:47    5

Ответы
tanshka tanshka  13.10.2020 03:56

1)has been making (present perfect continiuos)

2)has produced (past perfect)

3)has been established (present perfect)

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