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14 a. Identify the tenses in bold, then match them to their use.

1 She left university six years ago
2 He was waiting for the bus when the accident happened.
3 He had just finished his report when his boss asked to see him.
4 She had been working as a clerk for two years before she got promoted
a happened before another past action with emphasis on continuation
b happened at a specific time in the past
chappened before another past action
d
was in progress at a certain time in the past​.