填空题:根据以下材料，回答41-50题
The Name "United Nations"
The name " United Nations" was 41( probable ) devised by US ; 42 ( preside )Franklin D.Roosevelt, and first group of representatives of the member states who met and signeda 43(declare) of common purpose on New Year's Day in 1942. Representatives of fivepowers worked together to draw up proposals, completed at Dumbarton Oaks in 1944. Theseproposals, modified after debate at the 44(confer) on International Organization in SanFrancisco which began in April 1945, were finally agreed on and signed as the UN Charter by 50countries on 26 June, 1945.Poland, not represented at the meeting, signed the Charter ; 45(late) and was added to the list of 46 (origin) members.It was not until that autumn,however, after the Charter had been 47 (official) approved and signed by China, France, theUSSR, the UK and the US and by a 48 (major) of the other participants, the UN came into 49 (exist).The date was 24 October, now ; 50 (universe) celebrated as United NationsDay.
第49题答案是_______.