С пасива перевести в актив1) He got the prescription yesterday2) chemists will synthesize a new substanses3) morphology studies the form of plants

1) He got the prescription yesterday. The prescription was got by him yesyerday.

2) Chemists will synthesize a new substanse. A new substanse will be synthesized by chemists.

3) Morphology studies the form of plants. The form of plants is studied by morphology.