I'll try and tackle one, but try to be a little more specific about what's giving you trouble in the future. No one wants to go though explaining every part of each sentence to you, so you need to show what you know and what you don't. Pinpointing your trouble spots is useful for you and the person helping you. Being spoonfed a translation doesn't really help your skills. It's clear you're new, so welcome. I'm pretty new myself.
2. 友だちがおちこんでいる時、何をしてあげますか。
"When your friends are sad, what do you do for them?"
友だち - friend
おちこむ - to be sad
時 - time
何 - what
してあげる - do for someone. This is actually a combo of する (てform) - to do and あげる- to give to someone. Look up "~てあげる" and you'll understand it.
3. とんな町に住みたいですか。
"What kind of city to you want to live in?"
どんな - what kind of
町 - city
住む - to reside (live somewhere)
Probably what's giving you trouble is the verb conjugation. When you add "tai desu" to verbs it expresses the desire to do something. So...
住む -> 住みたい
To reside -> To want to reside