Fill in the blanks with the most appropriate option:-

He has just ………. from London.

returned

The correct option to fill in the blanks is returned.

The sentence is about someone who has just come back from London. The verb "return" is in the past tense, singular form. It is the most appropriate verb to use in this context, as it describes the fact that the person has already come back from London.

The other options are not as appropriate:

• Returning is the present participle of the verb "return". It is not as appropriate as "returned", as it does not convey the same sense of completion or finality.
• Return is the infinitive form of the verb "return". It is not as appropriate as "returned", as it does not convey the same sense of pastness or remoteness.
• Returns is the third person singular form of the verb "return". It is not as appropriate as "returned", as it does not convey the same sense of specificity or accuracy.