Multiple choice

He ____________ hardly finished his lunch when someone knocked at the door.

  1. was

  2. had

  3. did

  4. would
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

The sentence uses 'hardly...when' to show one action immediately followed another. The first action (finishing lunch) occurred before the past moment of knocking, so past perfect 'had' is required. 'Was' is simple past and incorrect for this sequence. 'Did' and 'would' do not fit the grammatical structure.

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