求下列动词的过去式和过去分词

原形 过去分词
discuss,make,collect,have,teach,find,interview,cycle,pollute,leave,eat,spend,plan,cost,put,finish,arrive
过去式
discussed,made,collected,had,taught,found,interviewed,cycled,polluted,
left,ate,spent,planed,cost,put,finished,arrived
过去分词
discussed,made,collected,had,taught,found,interviewed,cycled,polluted,
left,eaten,spent,planed,cost,put,finished,arrived
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