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4. Complete the sentences using Passive Voice.
1. Tennis (play) on a grass or hard court.
2. The wheel (invent) thousands of years ago.
3. English (speak) in many countries all over the world.
4. The goals (score) in the first 15 minutes of the match.
5. New medicine for many diseases (find) every year
6. America (discover) by Christopher Columbus in 1492.​