Write the correct form of the given words

Write the correct form of the given words.

17. Today, London Transport Museum is an interactive, family-friendly museum with over 300000 ___________ every year. (VISIT)

18. Sharks might look scary, but they are not usually ___________ to people. (DANGER)

19. There are a lot of high ___________ in New York city. (BUILD)

20. The total ___________ of this stone statue is 51.6 metres. (HIGH