Exercise 1 Exercise 2 - Mortimer English Club
To form the present perfect, past perfect, and future perfect tenses, add has, have, had, or will have to the past participle. ... (exercise, present perfect) We ...
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To form the present perfect, past perfect, and future perfect tenses, add has, have, had, or will have to the past participle. ... (exercise, present perfect) We ...
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