1. How did soldiers spend most of their time while on duty?
A. |
B. |
C. |
D. |
2. Which of these contributed the most to the high casualty rate on both sides during World War I?
A. |
B. |
C. |
D. |
3. All told, how many combatants died during World War I?
A. |
B. |
C. |
D. |