Select the option that expresses the given sentence in active voice.

Most of Earth's surface is covered by water.

Select the option that expresses the given sentence in passive voice.

The Mesopotamians invented the decimal system.

Select the option that expresses the following sentence in passive voice.

He had cleaned the bathroom.

Select the option that correctly expresses the given sentence in passive voice.

Why didn’t she bring her son to my house?

Select the option that expresses the following sentence in passive voice.

Gill scored 3 centuries in Tata IPL 2023.

Select the option that expresses the given sentence in passive voice.
He will give a lecture on personality development.

Select the option that expresses the given sentence in passive voice. 

His behaviour vexes me sometimes.

Select the option that expresses the given sentence in passive voice. Is he not driving a car?

Describe how you will tell your teacher that the windmill is being built by Master Yadav in active voice.

Select the option that expresses the given sentence in active voice.

Most of Earth's surface is covered by water.

Select the option that expresses the given sentence in passive voice.

The Mesopotamians invented the decimal system.

Select the correct active form of the given sentence:

"The preliminary results have been officially announced by the matriculation board."

Transform the following sentence into active voice:

The glass was broken.