Transform the sentences so that their meaning is the same. 1. In the past people thought that computers would never become popular and widely avaliable. In the past it _____________ computers would never become popular and widely avaliable. 2. Many say that Einstein had some problems at school because of his reluctance to learn everything by heart. Einstein ____________ some problems at school because of his reluctance to learn everything by heart. 3. Acording to the latest estimate, last year over 200 pupils aged 13-16 had failed Maths in our town. Last year there ____________ over 200 pupils aged 13-16 had failed Maths in our town. 4. Doctors claim that insomnia often causes depression. Insomnia _________ depression. 5. It is known that penicilin revolutionised medicine. Penicilin ________ medicine.