Question

Answer 1

1 The concerts are usually held at universities

2 This house was built 2 years ago

3 A test will be had tomorrow

4 He has already been seen

5 More than 70% the Earth's surface is covered by water

Answer 2

1. The concerts are usually held at universities.

2. this house was built 2 years ago.

3.A test will be had by her tomorrow

4.He has already been seen by her 

5.More than 70% of the earth's surface is covered by water.