When _______________ First World War began, it was compulsory for all British officers to...

Question

When _______________ First World War began, it was compulsory for all British officers to have a moustache.
Варианты ответа:
1 a
2 an
3 the
4 –

Answer 1

When a First World War began.

Answer 2

Ответ: 3 - the)))))))