English - Grammar - Verb Tenses - Past perfect tense - Past Perfect vs Simple Past

Work through 5 scenarios with timeline visualization: (1) 'When I arrived at the cinema, the film ___ (already/start).' Think: arriving = later action (simple past). Film starting = earlier action (past perfect) → 'had already started.' (2) 'She ___ (study) for hours before she ___ (take) the test.'