Their _________(参加)into the war changed the whole situation五分钟!
问题描述：
Their _________(参加)into the war changed the whole situation
五分钟!
答
Participation
答
Their __joining_______(参加)into the war changed the whole situation
答
应该填的是enter的名词形式,即entry
答
Their entry into the war changed the whole situation.