Question

By the time American troops entered World War I, the Allies
were determined to win the war without any help.
were using trench warfare successfully against the Germans.
were exhausted after years of fighting.
were preparing to attack Germany.

Answer 1

were exhausted after years of fighting.

By 1917 the Allied powers had suffered heavy casualties, resource shortages, and a long stalemate on the Western Front, so fresh American troops and supplies were badly needed.