English grammar error-spotting (present perfect after ‘‘has never’’): Read the sentence split into parts (A–D) and find the erroneous segment; select ‘‘No error’’ only if all parts are correct: ‘‘She has never / approve of him / working as a clerk. / No error.’’

Given data

• A: Auxiliary ‘‘has’’ → present perfect required.
• B: Main verb appears in base form ‘‘approve’’—mismatch.
• C: Non-finite complement ‘‘working as a clerk’’ is fine.

Concept / Approach
With the auxiliary ‘‘has’’, the past participle is needed: ‘‘has approved’’.

Step-by-step check
Part B should be ‘‘approved of him’’.

Correction
‘‘She has never approved of him working as a clerk.’’

Common pitfalls

• Leaving the lexical verb in base form after perfect auxiliaries.

Final Answer
approve of him