Question

Tiny and his friends was или were in the mountains last winter

Answer 1

Were 
Так как Tiny and his friends - множественное число

Answer 2

Were, потому что это множественное число

Answer 3

"Tiny and his friends were in the mountains last winter."

In this sentence, "Tiny and his friends" is the subject, and "were" is the correct verb choice to agree with the subject. The verb "were" is the past tense form of the verb "to be" used with plural subjects.

The sentence suggests that Tiny and his friends were present in the mountains during the previous winter. It implies that they spent time there, possibly engaging in various activities such as skiing, snowboarding, hiking, or simply enjoying the winter scenery. The use of "last winter" indicates that this event took place in the most recent winter before the current one.