The given sentence contains grammatical error. Identify

Select the correct active voice of the given sentence.

They were questioned by the immigration officer.

The sentence has been given in Active/Passive Voice. Change the voice to Passive/Active.

Ramesh sings a song.

Select the correct passive voice of the given sentence.

The Enforcement Directorate has seized a 22-room sprawling seaside farmhouse in Alibaug.

 India and Bhutan signed ten MOUs in the field of space research, aviation, power and education.

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

All weapons were surrendered by them.

Select the correct active form of the given sentence.

Let this letter be posted at once.

Select the correct passive form of the given sentence. 

Her failure to get admission in the Science stream surprised us.

Select the correct active form of the given sentence.

I am being devoured by curiosity.

Please share your class notes with me. 

Find out the appropriate words.