English:一道难题,Bill did everything he could ______(help) me.
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English:一道难题,Billdideverythinghecould______(help)me.English:一道难题,Billdideverythinghecould______(help
English:一道难题,Bill did everything he could ______(help) me.
English:一道难题,
Bill did everything he could ______(help) me.
English:一道难题,Bill did everything he could ______(help) me.
to help
he could是从句,可以省略,就变成
bill did everything to help me.
此处的to不可省略,不要被could蒙蔽.
to help
to help
to help
to help
to help
to help