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14-Identify the sentence that uses past perfect tense.
A.
Before Mary got​ home, Sam ate dinner.
B.
By the time Mary got​ home, Sam had eaten dinner.
C.
When Mary gets​ home, Sam will eat dinner.
D.
By the time Mary got​ home, Sam was eating dinner.

Respuesta :

RavenclawVD

Answer:

B.  By the time Mary got​ home, Sam had eaten dinner.

Explanation:

The past perfect tense shows that something happened before another action in the past. This tense is formed with the helping verb had plus the past participle of the main verb. In this case, it is had eaten.  (Eaten is the past participle of the verb eat).