I- TURN THESE SENTENCES INTO THE PASSIVE VOICE. 1- (John) (painted) (the house) last Saturday.
2- The Biro brothers invented the ball point pen.
3- Bill is writing the answers now.
4- Alice read two books yesterday.
5- They speak English very well.
6- Very well are they speaked by English
7- They implant the cells in the body
8- Tissue engineering attracts chemical engineers.
9- A team of American scientists grew a chest in a lab.
10- Doctors will monitor patients.
11- Researchers used slow computers.