Simple Past is a common tense in English. You should understand it, and know it well.
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different usages of this tense:
Make sure you also read:Examples of Typical Time Expressions
(The verbs are
He broke his tooth last week.
Last year he had only two candles on the cake.
He was very dirty 30 minutes ago.
She asked for a kiss.
He played and he lost.
They worked very hard for this.