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Alternative answers:
1.The students did a Biology experiment in the lab last week.
2.My brother played PS with some of his friends yesterday.
3.My mother cooked Soto Ayam for dinner last night.
4.Ratna studied Mathematics last night.
5.My father read the newspaper this morning before he went to work.
6.Aunt Mimi bought some groceries at the market this morning.
7.Sinta came from Manado last Saturday.
8.Rudi watched soccer on TV last night.
9.Erika sent an email to her penpal yesterday afternoon.
