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The Smirnovs move into the new flat every five years.

They usually  move into the new flat in summer.

We often move into the new flat because of our father's job.

They have a house-warming party in the evening.

The Ivanovs  have a house-warming party every five years.

Usually people have a house-warming party on Sundays.

Our flat has all modern conveniences.

The Smirnovs' flat has no modern conveniences.

People want to have all modern conveniences in their flats.