Change the following sentences into passive: 1 numerous scholars studied the ancient circle 2 numerous scholars studied the ancient circle 3 It is unknown who built the stone monument 4 A million tourists attend the site every year 5 They built this ancient stone circle in 3000-2000 BC
1 The ancient circle was studied by numerous scholars. 2 The ancient circle has been studied by numerous scholars. 3 Who built the stone monument is unknown. 4 The site is attended by a million tourists every year. 5 This ancient stone circle was built in 3000-2000 BC by them.
1 The ancient circle was studied by numerous scholars.
2 The ancient circle has been studied by numerous scholars.
3 Who built the stone monument is unknown.
4 The site is attended by a million tourists every year.
5 This ancient stone circle was built in 3000-2000 BC by them.