помогите плиз
I. Перепишите следующие предложения, определите в каждом из
них видо-врсменную форму и залог глагола-сказуемого. Переведите
предложения на русский язык.
1. When much had been done in the study of ecology by our university it
became аn important scientific centre.
2. A curriculum of the new type of secondary school is offered by the Ministry
of Education.
3. The research of planets will be developed with the help of cosmic apparatus.
4. This material is unaffected by solar radiation.