use the verbs in the past tense
the children (arrive) at the summe camp yesterday
we ( learn ) about farm animals in the village
some children (swim) in the river last sunday
me parents (visit) my grandfather two days ago
William (send) e-mails to his friends on monday
the girls (play) volleyball in the afternoon
the children (have ) a barbecue on the beach last month
at nigth they (sing) songs and (dance) last saturday