Test:"Passive voice"

Make the sentence Passive. 1)Many accidents (to cause )by drunken driving and overspeed. 2)This mild (to take) from a cow yesterday morning. 3)The house (to build)by my grandfather 20 years ago. 4)When (to invent)the first plane? 5)It was sunny in the morning ,but the weather (to change )by the cyclone from the North. 6)A hundred specialists (to employ )by the company last year. 7)The president of the company (to elect) last week. 8)My cat (to run)over by somebody’s car, but luckily it survived. 9)The wrong TV set (to return) to the shop and replaced by the new one.