Написать письмо: im so bored. theres nothing to do around here. my mother says i should take up some hobby. but i think collecting stamps or coins is for kids. do you have a hobby? why do you find it interesting? what unusual hobbies do you know? write him a letter and answer his 3 questions. write 80-100 words.

Hello dear friend! i think i would agree with you mother. spending your days without any activity is boring. collecting stamps and coins is tottaly for kids. you should find a more interesting and not simple hobby. for example, i have a hobby to take photos of people who i even don't know. this is very ambitious. i usually catch them sitting in the bus, eating, writing. i like it how they are not prepared and do not expect their actions to be captioned. for this kind of hobby i dont really need to be active as there are people all around me. eventually, when i mix up all the photos together, i could even make a film. without any talking, just some special effects. i know a very interesting activity which i would like to try as a hobby. it is drawing on water with paint. although i don't know much about it yet, i am looking forward to make a start. hope i encouraged you to do interesting things, bye

open - opened - opened. это правильный глагол, поэтому просто присоединяешь окончание -ed.