An apple carries about 100 million useful bacteria. 

Has the car been cleaned by the driver?

Let the silence be maintained.

Select the correct Passive form of the given sentence.

He drew a house in the morning.

They claim to have seen the robber in several cities.

Choose the best way to complete these passive voice sentence 

A story ______

Choose the correct active/passive voice, which best expresses the following sentence:- Scientists successfully conducted a water detection test on Mars.

Select the correct active voice of the given sentence.

Are you frightened by snakes and spiders?

He has to repair the TV.