Thanks for helping us __ our work on the farm(用介词填空）

Thanks for helping us __ our work on the farm(用介词填空） Thanks for helping us with our math中helping为什么是ing形式? thanks for ( )our work. with the man helping us,we finished the work on time为什么要用hel thanks a lot for helping us us,for,helping,with,English,thanks,our怎样连词成句 Thanks for your helping us with our English.We wish you a ne we __(stay) on the farm for a lolng time 用介词填空（at in on by with）：My pen is __ the desk. 用thank for your helping还是thankS for your helping 英语填空：Our school ____ the teachers for the work they do on te 英语连词成句 lost helping for thanks a us