|||Common||| Select the correct active form of the given sentence. |||End|||
Every passing vehicle was being thoroughly checked by the guards

Options

A. The guards were thoroughly checking every passing vehicle.
B. Every passing vehicle were thoroughly checking the guards.
C. The guards have been thoroughly checking every passing vehicle.
D. The guards have thoroughly checked every passing vehicle.

Answer

A

Explanation

Basic rules to be followed for Active/Passive conversions are:
1. The object of the active verb becomes the subject of the passive verb.
2. The finite form of the verb is changed (to be+ past participle).
3. The subject of the active sentence becomes the object of the passive sentence (or is dropped).
4. Preposition "by" is used before object.
The given sentence is in passive voice. The structures for active/passive voices are:
Active: Subject + was/were + verb (ing) + object…
Passive: Object + was/were + being + verb (IIIrd from) + by + subject...
So, with the help of the above structures, we can convert the given sentence into active voice:
The guards were thoroughly checking every passing vehicle.