来自李莉敏的问题
求下列动词的过去式和过去分词discuss,make,collect,have,teach,find,interview,cycle,pollute,leave,eat,spend,plan,cost,put,finish,arrive
求下列动词的过去式和过去分词
discuss,make,collect,have,teach,find,interview,cycle,pollute,leave,eat,spend,plan,cost,put,finish,arrive
