21£®“Chinese house wives” spent 100 billion yuan over the past two weeks ____ 300 tons of gold, ______ to sustain gold prices at Us ¡ç1,468 an aunce.

       A£®purchasing, helping                   B£®to purchase, to help

C£®to purchase, helping                             D£®purchasing, to help

22£®June 7^th is a special day, ______, I think, that will be remembered by all the senior students forever.

       A£®one                        B£®it                     C£®which                 D£®that

23£®We are trying to reach a point ________ both sides’ benefits will be met. 

A£®which                    B£®that                 C£®where                 D£®when

24£®----How do you think we can make the agreement?

       A£®what; what           B£®where; what     C£®what; whether     D£®where; whether

25£®Most of the Americans _______ Obama, otherwise he would have failed in his second run.