【单选题】
—We all had a lot of fun at the barbecue ?yesterday. Pity you weren’t there.
—I really should have gone with ?you but I _______ on some remaining problems.
【单选题】
Experience is believing. If you’d like to know what it ____ like to be a soldier in World War Ⅱ,____ the game “Brothers in Arms: Roads to Hill 30”.
【单选题】
The size of the generation gap seems to be spreading with ____ rapid changes in technology, in education, in transportation and in communication that are taking place all over ____ globe.