Change the sentence from active to passive. Use the by-phrase when necessary

Câu 3(0/5):

Change the sentence from active to passive. Use the by-phrase when necessary. There are two examples.

1. My grandpa built this house.

This house was built by my grandpa.

2. Someone baked this cake two hours ago.

This cake was baked two hours ago.

3. People speak English in Australia.

.

4. People grow rice in many places.

.

5. Somebody made this machine long ago.

.

6. Edison invented the phonograph.

.

7. Someone rings the bell every hour.

.
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