Can you please check if the following sentences are possible? Thank you.

1)Imagine you are a participant in (?) in the Ten Tors Challenge. Describe your clothes. Start your paragraph with: "I'm wearing.."
2) What clothes do you like wearing? What clothes are trendy among Italian teenagers nowadays?
3)I've been here for thirty minutes and the train hasn't arrived yet.
4) Where has Peter gone? There he is.
5) I've never been in a helicopter before.
6) We've sold more than 50 cars so far/up to now.
7) Have you been to the new supermarket? No, not yet. We haven't talked to each other since we quarrelled.
It's the second time I've driven your car.
8) She'll buy herself a car as soon as she has enough money. How many times have you been to Paris?
9) Is it a long time since you last went to Paris?
10) Corrector fluid or correcting fluid?

1. Have only one "in" -- the rest is fine.

3. Add comma after "minutes" and change "and" to "but."

6. (either one works)

10. I'd say "correction fluid" if you're referring to the white stuff you paint over typing errors.

how to do this

1) To check if the sentence is possible, you can imagine yourself as a participant in the Ten Tors Challenge and describe your clothes. Start the paragraph with "I'm wearing..." and then describe your attire for the challenge.

2) To determine if the sentences are possible, you can consider your personal preferences for clothing and then think about the current fashion trends among Italian teenagers. The sentence structure is correct, but the information provided will depend on your own tastes and knowledge of fashion trends in Italy.

3) Check the sentence for grammar and logic. Consider whether you have been waiting at a specific location for thirty minutes and if the train is expected to arrive within that time frame. If the train has not yet arrived despite your thirty-minute wait, the sentence is possible.

4) Check the sentence for grammar and logic. If you are looking for Peter and then spot him, the sentence is possible.

5) Check the sentence for grammar and logic. If you have never been in a helicopter before, the sentence is possible.

6) Check the sentence for grammar and logic. If you have sold more than 50 cars so far or up to now, the sentence is possible.

7) Check the sentence for grammar and logic. If you have not visited the new supermarket yet and you haven't talked to each other since the quarrel, the sentence is possible.

8) Check the sentence for grammar and logic. If the person will buy themselves a car once they have enough money and you want to know how many times the person has been to Paris, the sentence is possible.

9) Check the sentence for grammar and logic. If you want to know if it has been a long time since someone last visited Paris, the sentence is possible.

10) The correct spelling is "correcting fluid."