Choose the correct option and rewrite the sentence according to the instruction given after each.
One should keep one’s promises. (Begin with: Promises...)
Topic: Active and passive voice
Try it
Pick an option and check your answer. The full worked answer is below either way.
Answer
(c) Promises should be kept..
The instruction "Begin with: Promises" tells you the object must become the subject, which means converting to the PASSIVE voice.
Active: One should keep one’s promises. Passive: Promises should be kept.
With a MODAL verb (should, must, can, will) the passive is formed as modal + BE + past participle — "should BE KEPT". That pattern is worth memorising, as modals appear in this question type constantly.
Note that the agent "by one" is DROPPED. When the doer is a vague general subject — one, people, somebody, they — it is omitted in the passive rather than written out.
Option (a) reverses subject and object into nonsense; (b) negates the meaning; (d) is not a passive at all.
Promises should be kept..