[填空题]In 1942, Americans(15)________________over the Japanese. The United States navy(16)________________near Midway Island. The United States was greatly helped in the Battle of Midway because (17)________________in which the Japanese sent messages. The United States knew (18)________________. Many hard battles were fought on land and on the ocean. The United States leaders in the Pacific, General Douglas Macarthur of the army and Admiral Chester Nimitz of the navy, (19)________________.This plan was called "island hopping". The plan meant that the United States (20)________________in the Pacific on which Japan had placed soldiers. Other Japanese-held islands would be passed by and (21)________________from Japan. At the same time, ships of the United States navy would fight Japanese warships wherever they found them. Each attack on an island held by the Japanese(22)________________. But the American forces (23)________________.Finally, islands were captured that were near enough