Помогите пожалуйста вставить правильные предлоги 4. Archeologists and historians are more and more worried...

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1. Archeologists and historians are more and more worried about the Italian city of Venice, one of the world's most important historical cities. Venice, built in the seventeenth century by the Doges of Venice, is visited by more than one million people in a year. But Venice's buildings are in danger. Their foundations are shaken by the vibrations from passing ships. Many parts of the city are often flooded and these floods cause damage too. Worried residents and experts from all over the world are looking for ways to stop the damage and preserve Venice.

2. Unexpected guests are good for you. The phone rings, the friends you haven't seen for ages are arriving in a few hours, and you realize with horror that you haven't changed the sheets in the spare bedrooms for months, that all the dirty dishes have been in the sink since the weekend, and that you've been wearing the same frock for three days.

3. Last year I went on a trip which was an absolute disaster. I was going to Berlin on business when, by accident, I got on the wrong train. We were on the way to Brussels before I realized my mistake. In the end I got to Berlin twenty-four hours later than I had expected.

4. Last year my family went on holiday to Thailand. We went by air; it was a very long journey but we were very well looked after on the plane by all the stewardesses. We stayed at a large hotel on the outskirts of Bangkok. We were given a wonderful suite on the top floor of the hotel. The most enjoyable day I had was when we went on a trip by boat, down the river to the crocodile farm. We had a wonderful holiday.

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1. Archaeologists and historians are more and more worried about the Italian city of Venice, one of the world's most important historical cities. Venice, built in the seventeenth century by the Doges of Venice, is visited by more than one million people a year. But Venice's buildings are in danger. Their foundations are shaken by the vibrations from passing ships. Many parts of the city are often flooded, and these floods cause damage too. Worried residents and experts from all over the world are looking for ways to stop the damage and preserve Venice.

2. Unexpected guests are good for you. The phone rings, and the friends you haven't seen in ages are arriving in a few hours, and you realize in horror that you haven't changed the sheets in the spare bedrooms for months, that all the dirty dishes have been in the sink since the weekend, and that you've been wearing the same frock for three days.

3. Last year I went on a trip which was an absolute disaster. I was going to Berlin for business when, by accident, I got on the wrong train. We were on the way to Brussels before I realized my mistake. In the end, I arrived in Berlin twenty-four hours later than I had expected.

4. Last year my family went on holiday to Thailand. We went by air; it was a very long journey but we were very well looked after by all the stewardesses on the plane. We stayed in a large hotel on the outskirts of Bangkok. We were given a wonderful suite on the top floor of the hotel. The most enjoyable day I had was when we went on a trip by boat, down the river to the crocodile farm. We had a wonderful holiday.