Difficulty: Easy
Correct Answer: No error.
Explanation:
Given data
Concept / Approach
The correlative pair ‘‘hardly … when …’’ is correctly formed with the earlier action in past perfect and the subsequent interrupting event in past simple. This is a textbook sequence-of-tenses pattern.
Checks
A: correct aspect; B: grammatical object; C: correct use of ‘‘when’’ (not ‘‘than’’).
Final Answer
No error.
Discussion & Comments