Подчеркните сказуемое главного предложения и определите видо-временную форму и залог глагола .
1. Interesting results were obtained after a number of experiments.
2. searching for ore with plants started a new trend in geology
3. later generations will regard Antarctica as the natural storehouse of food .
4. modern science and inventions have made a great change in the techniques of exploration
1. Interesting results were obtained after a number of experiments.
2. searching for ore with plants started a new trend in geology
3. later generations will regard Antarctica as the natural storehouse of food .
4. modern science and inventions have made a great change in the techniques of exploration
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1. Interesting results were obtained after a number of experiments.(Past Simple Passive)2. Searching for ore with plants started a new trend in geology (Past Simple Active)
3. Later generations will regard Antarctica as the natural storehouse of food .(Future Simple Active)
4. Modern science and inventions have made a great change in the techniques of exploration(Present Perfect Active)