1.Past Simple Tense: The answer effectively uses the past simple tense ("was", "made", "loved", "used to play", "shared", "have lasted", "helped") to describe past activities and experiences, which is appropriate for the context of childhood memories.
2.Complex Sentences: The response includes complex sentences with multiple clauses, such as "Some of these friendships have lasted, and I still keep in touch with a few of my childhood friends," demonstrating the ability to convey detailed information clearly.