用“when"或"while"填空
1.___Margowastalkingonthephonehersisterwalkedin.
2.___wevisitedtheschool,thechildrenwereplayinggames.
3.___Satahwasatthebarber's,Iwasgoingtoclass.
4.___IsawSarlos,hewaswearingagreenshirt.
5.___Aliwascleaninghisroom,thephonerang.
6.___Ritabougutheranewdog,itwaswearingalittlecoat.