I.правильный перевод предложения в present participle в функции обстоятельства.
1.modern technology was used by researches to produce a new drug .
2. researches have produced a new drug using modern technology.
3. to produce a new drug researchers had to use modern technology.
ii. заменитель существительного в предложении. перевод выбранного предложения.
1. his knowledge is more universal than that of his friend.
2. at the lecture the professor told us some facts that we didn't know before.
3. the child was so scared of the dentist that he didn't let the doctor examine him.