Better English

1. throwback  2. by studying from other countries and learning from their example 3. (i) T
Collecting animal or bird figurines is a popular hobby.
Collecting animal or bird figurines is a popular hobby.
1. Because most people in Hong Kong use smartphones  2. Arguments for removing (any two from): obstruction for pedestrians/get in the line of sight of drivers/ take up too much space on pathways.