Answer:
1)narrow ditch.
2)Trenches were long, narrow ditches dug into the ground where soldiers lived. They were very muddy, uncomfortable and the toilets overflowed. These conditions caused some soldiers to develop medical problems such as trench foot.
3)During the First World War, letter writing was the main form of communication between soldiers and their loved ones, helping to ease the pain of separation. ... Receiving letters from family and friends was also vital to morale, keeping men and women connected to the homes they had left behind.
