A last doubt. I hope you can have a look at it.

1)How can I check this sentence:
" We had free lunch in Trieste"
We were free for lunch.
We were given some free time for lunch.
We were free to have lunch where we wanted (to).
2) We had a look at the castle and we visited the Roman ruins, remains, findings (Which one is best?)

1)The first sentence means that you didn't pay for your lunch.

The other three mean about the same -- that you didn't have to work or stay with the group and you could eat where you wanted to eat.

2) We visited Roman ruins. The other two words are wrong here.

Sure, I can help you with that. Let's take a look at your questions one by one:

1) How can I check this sentence: "We had free lunch in Trieste"?

To check the sentence for correctness, you can analyze the grammar and meaning.

Grammatically, the sentence seems fine. It consists of a subject ("We"), a verb ("had"), and an object ("free lunch in Trieste").

In terms of meaning, you need to consider whether the sentence accurately conveys the intended message. If you indeed had a lunch that was provided without charge while you were in Trieste, then the sentence is correct. However, if the lunch was not free, then the sentence would be inaccurate.

2) We had a look at the castle and we visited the Roman ruins, remains, findings (Which one is best?)

When choosing between "ruins," "remains," or "findings" to describe the Roman artifacts, it depends on the specific context and what you want to convey.

- "Ruins" is generally used for structures or buildings that are in a state of decay or partial destruction. It implies that the Roman structures are not fully intact.
- "Remains" refers to the remaining parts or fragments of something. In this context, it suggests that there are parts of the Roman structures still preserved.
- "Findings" refers to the discoveries or artifacts that have been found or excavated at the site. It emphasizes the idea that you discovered or observed these Roman artifacts during your visit.

Ultimately, the choice between these words depends on the specific meaning you want to convey and the condition of the Roman artifacts at the site.