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Вот заполненные предложения с использованием Past Simple и Past Continuous:

One girl of about eighteen was preparing (to prepare) supper in the kitchen while two other girls still were doing (to do) something in the kitchen garden near the house.

The old man invited (to invite) me to have supper with them.

They all seemed (to seem) to be nice people, and we had (to have) a friendly talk.

After supper, my new friends and I went (to go) out into the garden.

The moon was shining (to shine) high in the sky, and the night was (to be) warm and beautiful.

That evening was (to be) very pleasant, and I’ll remember it a long time.