1______theworldbegan,nationshavehaddifficultyinkeepingpercewiththeirneighbours.AAlthoughBWhenCUntilDEverSince2_______difficuitieswemaycomeacross,wewillhelponeanothertogetoverthem.AWhateverBWhicheverCHoweverDWhat
1______theworldbegan,nationshavehaddifficultyinkeepingpercewiththeirneighbours.
AAlthoughBWhenCUntilDEverSince
2_______difficuitieswemaycomeacross,wewillhelponeanothertogetoverthem.
AWhateverBWhicheverCHoweverDWhat
3Iampleapedwithwhatyouhavetoldmeand____youhavegiventome.
AallwhatBallthatCwhichDallwhatever
4Thetimewillsurelycome_______ordinarypeoplecouldoperatecomputersaswell.
AwhileBwhenCasDonwhich
5______hecametoEnglandtostudy,hedidn'tknowhowtocook.
AWhenBSinceCUntilDyet
顺便说下so,sothat有什么区别.