Istadied englich when he came правильно?

Ihad already studied english when he camei  was  studying english  when he  came

•the universal desire for gold made alchemy a formal discipline in the first centrury a.d. – всеобщее стремление к золоту сделало формальной дисциплиной в первые века нашей эры. вопросы: 1) why was alchemy a formal discipline in the first centrury a.d.? 2) what did make alchemy a formal discipline in the first century a.d.? 3) in which century was alchemy a formal discipline? 4) was alchemy a formal discipline in the first century a.d. or b.c.? 5) what was a result of the universal desire for gold? 6) was it the universal desire for gold or silver? 7) the universal desire for gold made alchemy a formal discipline in the first century a.d., wasn't it? 8) was alchemy a formal or professional discipline?

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