Укажите множественное число "an ox" 1 oxs 2 oxes 3 oxen 4 oxens

i always dreamed to visit to rise by the high mountain, and my dream came true. joe took me himself. it was magnificent feeling. i not when didn't feel such fear, after all height very big. certainly there it is very cold, but it is very beautiful. from its top very well all is visible. at top of a smog of snow and it is dangerous. after all the avalanche because of noise there can begin. the main difficulty consisted in lack of any track. we simply clambered on a cool slope of the hill, as ants. at this height there was no wish is, neither to drink, nor to speak. the silence was broken only by flaws. with weather we were lucky — mountains were open. ice cracks often meet on approaches to category passes. width them reaches several meters, depth - 20-30 meters. on open ice they are well noticeable but where the glacier is filled up with snow, cracks are disguised.