Indicate if past or present participle

They have planned their trip carefully.
- Past

Mira's brother has formed a list of supplies.
- Past

She has decided on an isolated island.
- Past

Mira's mother has selected the destination.
- Past

She was dreaming of a swimming pool.
- Past

Her mother has reminded her that there is no post office. - Past

She has decided to make the best of this trip. - Past

One of your answers is wrong.

I apologize, but there seems to be a misunderstanding. The sentences you provided do not include any present participles. Here is a breakdown of each sentence and its respective participle form:

1. "They have planned their trip carefully." - Past participle: "planned"
2. "Mira's brother has formed a list of supplies." - Past participle: "formed"
3. "She has decided on an isolated island." - Past participle: "decided"
4. "Mira's mother has selected the destination." - Past participle: "selected"
5. "She was dreaming of a swimming pool." - Past participle: "dreaming"
6. "Her mother has reminded her that there is no post office." - Past participle: "reminded"
7. "She has decided to make the best of this trip." - Past participle: "decided"

Please let me know if I can help you with anything else!