Past perfect continuous vs past perfect simple

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Edad: 13+
Level: Intermediate
Idioma: English (en)
ID: 187749
13/05/2020
Country code: MX
Country: Mexico
Asignatura: English as a Second Language (ESL) (1061958)
Tema principal: Grammar (2013241)

To contrast these tenses

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Past perfect continuous vs past perfect simple

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