1. Look at the structure in this picture. It is on the left side of the flagpole in the picture on/of page 163. This one is used for helicopters. Helicopters take off and land here. What is this place? It is a heliport.
(Would you check the sentences in this passage? Which one is better, on or of, in the second sentence?)
Look at the structure in this picture. It is on the left side of the flagpole in the picture on page 163. This structure is used for helicopters. Helicopters take off and land here. What is this place? It is a heliport.
(only two corrections)
=)