Odpowiedź:
1 Gravity was discovered by Isaac Newton.
2 This website is visited by millions of people every day.
3 My new speakers weren't delivered yesterday.
4 These devices aren't used very often.
5 Thousands of packages are delivered by this company every day.
6 The house wasn't built in 1920s.
7 This room isn't cleaned very often.
8 The Internet wasn't invented until World War II.
9 Most household jobs aren't done by hand.
10 A new fridge was bought by Mary last week.