Ответ:

Выбираем слова, подходящие по значению и грамматической сочетаемости: teenager — подросток, oval face — овальное лицо, enthusiastic smile — выразительная улыбка в данном контексте, brown eyes — карие глаза, in terms of height — в отношении роста, athletic physique — атлетическое телосложение.

Заполненный текст: Jake is a 15-year-old teenager who is going through that awkward yet energetic phase of adolescence. He has an oval face with a complexion that still shows occasional breakouts typical for his age. His most distinctive feature is his bright, enthusiastic smile that reveals recently-removed braces. He has somewhat unruly dark blonde hair cut in a trendy style, longer on top and shorter on the sides. Jake's round, inquisitive brown eyes reflect his curious nature and are often focused on his phone or gaming device. In terms of height, Jake is still growing and currently stands at about 173 cm, appearing slightly lanky as his recent growth spurt has left him with long limbs he hasn't quite grown into yet. He has a slim build with shoulders that are beginning to broaden, suggesting he will likely develop a more athletic physique as he matures.