They went in a gate on top of the hill. It nearly took my breath away when I looked up

“They went in a gate on top of the hill. It nearly took my breath away when I looked up. Up there, in the biggest grove I had ever seen, was a huge house with round white pillars about a thousand feet high and the yard was so full of rose-bushes and box-bushes and lilacs that you couldn’t have seen the house if it hadn’t been as big as the Capitol at Washington.”
(a) Who went in a gate on top of the hill?
(b) Which word in the extract means ‘the area outside a building’?
© Why was he so stunned?

(a) Colonel Allyn and his daughter Jessie went in a gate on top of the hill.
(b) The word is ‘yard’.
© He was stunned to see the mansion of the Colonel. He had never seen such a huge house.