English - Grammar - Verb Tenses - Past continuous tense - Fill in the Tense

15 sentences mixing past continuous and simple past: (1) 'She ___ (read) when the doorbell ___ (ring).' (was reading / rang). (2) 'While they ___ (eat) dinner, the lights ___ (go) out.' (were eating / went). (3) 'I ___ (watch) TV while he ___ (do) homework.' (was watching / was doing). (4) 'The teac