The correct answer to this problem is A
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. (<em>Eaten</em> is the past participle of the verb <em>eat</em>).
I think is d a precious tone that is buried in the forest for good luck
It shows the connection between ideas, sentences, or paragraphs. So the first one :)