3. Dutch, French, German
5. Luxembourgish, French, German
7. English (only 1% speak Scottish Gaelic)
8. English (21% also speak Welsh, and it is still the first language in parts of north and west Wales)
9. English (only 3% speak Irish Gaelic)
10. English (only 22% speak French as a first language, and mostly in Quebec)
13. 11 official languages - Zulu (23.8%), Xhosa (17.6%), Afrikaans (13%), Northern Sotho (9.4%), Tswana (8.2%), English (8.2%), Sotho (7.9%), Tsonga (4.4%), Swati (2.7%), Venda (2.3%), Ndebele (1.6%).
No.13 is sort of a trick question, as 60% of WHITE South Africans speak Afrikaans (and 39% English). I would also have given Afrikaans and English as my answer. So I am learning too. :)
And for the record, the majority of Scottish and Irish people can't speak a single word of gaelic. We speak English, and only English (except for in some remote areas of the highlands and islands where gaelic is still spoken). In Wales, Welsh language is still a compulsory language in school up until the age of 16, so most Welsh people speak some Welsh, but it is only the first language in certain parts of North and West Wales. For the majority of Welsh people, the first language is English.