来自李锐的问题
【九下英语关于现在完成时和一般过去时J：Haveyouevertakenpartinanenvironmentalproject?K：Yes,Ihave.IhelpwithaClean-UpDaylastyear.Itwasconsideredthebiggestclean-upprojectthiscityhadeverhave,J：Howmanypeopl】
九下英语关于现在完成时和一般过去时
J：Haveyouevertakenpartinanenvironmentalproject?
K：Yes,Ihave.IhelpwithaClean-UpDaylastyear.Itwasconsideredthebiggestclean-upprojectthiscityhadeverhave,
J：Howmanypeople___1__(take)part?
K：Ithinkmorethan1,000people__2___（come）tohelpout,
这两空分别用什么时态?要理由!
