Questions

The possessive form of pronoun ‘one’ is ‘oneself’. So the phrase ‘with himself’ needs to be replaced with ‘with oneself’ to make the sentence grammatically correct. Thus, the correct formation would be, ‘One is often pleased with oneself’.

Penchant means habitual liking for something which is nearest in meaning to liking.

If some action has started in the past and is still continuing, then present perfect continuous tense should be used instead of present continuous tense. So, the phrase ‘is working’ needs to be replaced with ‘has been working’ to make the sentence contextually correct. Thus, the correct formation would be, ‘Ramesh has been working in this factory for the past three months’.

‘Prefer’ is followed by the gerund form of the verb. Thus, ‘spend’ needs to be replaced with ‘spending’ to make the sentence grammatically correct. Thus, the correct sentence would be, ‘Though he is a gifted comedian, he prefers spending his spare time watching horror movies.