Привожу только предложения с пропусками:
What would you do if you were a scientist?
Marek. Well, if I could work in medicine, I would develop a vaccine for AIDS.
Kate. Well, if I had a job in science I would work with animals, I would like to do research into dolphins.
Adam. If I worked for an IT company, I would design a computer that you can use under water.
Lucy. If I could choose to work in science, I would be an astronomer.