Перепишите следующие предложения; подчеркните в них глагол-сказуемое и определите его видо-временную форму и залог. переведите предложения на язык.
1. we have found that the nucleus of the atom is a tremendous storehouse of energy.
2. rapid sand filters were developed in the u.s in 1900-1910.
3. mendeleyev tried to find some system of classifying the elements whose properties he was describing.
4. as a rule a new discovery is followed by intensive research work of other scientists.

ruslan189kalin    3   27.11.2019 13:15    20