Read the extract again and complete the sentences. 1 captain nemo took us north,through the indian ocean to 2 we sailed through the mediterranean sea and 3 there were stone houses and 4 atlantic did exist, but only captain nemo.

1) Captain Nemo took us north, through the Indian Ocean to ______________.
Possible answers:
- the Arabian Sea
- the Bay of Bengal
- the Red Sea
- the Gulf of Oman

2) We sailed through the Mediterranean Sea and ______________.
Possible answers:
- reached the Gulf of Guinea
- continued into the Red Sea
- explored the Aegean Sea
- made our way towards the Suez Canal

3) There were stone houses ______________.
Possible answers:
- in a coastal village
- on an island
- on a deserted shore
- in a fishing town

4) The Atlantic did exist, but only Captain Nemo ______________.
Possible answers:
- knew its secrets
- discovered its hidden treasures
- explored its depths
- ventured into its unknown territories within the Nautilus

To complete the exercise, the student needs to carefully read the given extract and understand the context. From the text, they can gather information about the directions and seas mentioned by Captain Nemo during their journey. The answers to the sentences can be filled in by using logical reasoning based on geographic knowledge. It is important to encourage the student to think critically and make educated guesses if they are unsure about the precise answer.