Question

Помогите, пожалуйста, с упражнением на времена
Simple Past / Present Perfect / Past Perfect
1. When Jack (enter) the room, I (recognize, not) him because he (lose) so much weight and (grow) a beard. He looked totally different!
2. The Maya established a very advanced civilization in the jungles of the Yucatan; however, their culture (disappear, virtually) by the time Europeans first (arrive) in the New World.
3. I (visit) so many beautiful places since I (come) to Utah. Before moving here, I (hear, never) of Bryce Canyon, Zion, Arches, or Canyonlands.

Answer 1

1. When Jack entered the room, I didn't him because he had lost so much weight and had grown a beard. He looked totally different! 
2. The Maya established a very advanced civilization in the jungles of the Yucatan; however, their culture had disappeared by the time Europeans first arrived in the New World. 
3. I have visited so many beautiful places since I came to Utah. Before moving here, I have never heard of Bryce Canyon, Zion, Arches, or Canyonlands.