Which three lines in these excerpts show the painful and filthy conditions faced by soldiers in the trenches during world war i?

hello!

in winter trenches, cowed and glum,

with crumps and lice and lack of rum,

obscene as cancer, bitter as the cud

of vile, incurable sores on innocent tongues,

i hope this , have a bless day!

its 1 ,2 3,4 for ploto users

i believe that dan is so anxious because he dose not know what awaits him when he gets there. but i dont know to be honest