The school needs help( )the school trip.Ato B for Cwith为什么不用with?

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Theschoolneedshelp()theschooltrip.AtoBforCwith为什么不用with?Theschoolneedshelp()theschooltrip.AtoBforCwi

The school needs help( )the school trip.Ato B for Cwith为什么不用with?
The school needs help( )the school trip.Ato B for Cwith
为什么不用with?

The school needs help( )the school trip.Ato B for Cwith为什么不用with?
B needs help for sth.固定搭配,表示在某件事上需要帮助
to 一般是对人,而且在这和help 没法搭配

B 对于