use -s where necessary
1)More than twenty million... tourists come to Great Britain every year.
2)Kings Cross railway station appeared in London about a hundred... and sixty years ago
3) Thousand... of tourists come to London every day.
4) The Themes is theree hundred... and forty-six kilometres long
5) There are two hundred... and fourteen bridges over the Thames
6) You can see thousand... of wonderful paintings in the National Gallery.
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