1.Fill in the gaps with the correct form of the word or with the correct form of the verb in brackets.

Paul was staying with his grandfather for the summer holidays on (-/a/the) _________________________ Eagle Island. He enjoyed (go/to go/going) _________________________ to visit the old man because he lived in an old house which had about 10 rooms. He did not know the exact number of rooms, but he loved exploring (it/them/him) _________________________. There was a wonderful view of the ocean from the first-floor windows and Paul liked to sit there and imagine the oceans of the world.
One day, while he (is walking/were walking/was walking) _________________________ down a long corridor, he noticed a door to the roof. If he had not been a curious boy, he (wouldn’t have gone/wouldn’t has gone/wouldn’t go) _________________________ upstairs. He opened the door and found a small and very dark room. It did not smell good because of the lack of fresh air. A large window gave just (too/so/enough) _________________________ light to see all the boxes that (was kept/kept/were kept) _________________________ there. He saw an old wooden box standing in the corner. He turned the key (carefully/careful/carefuly) _________________________ in the lock and opened it. There were (lot of/a lot
of/much) _________________________ books there. He took one of them and began to read. The book was so exciting that he did not notice how much time he (had spend/has spent/had spent) _________________________ there.