He ___ (learn) over one thousand words at the end of last year.

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He ___ (learn) over one thousand words at the end of last year.

He ___ (learn) over one thousand words at the end of last year.
He ___ (learn) over one thousand words at the end of last year.

He ___ (learn) over one thousand words at the end of last year.
learned或 learnt都可以,两种过去式的表达

填learned