Will vs going to

If you leave your keys with the hall porter he (take) the car round the garage.

Why have you brought your camera? Are you (try) to take photographs?
It´s not allow you know.
No, I´m (try) to sell the camera.
That´s not allowed either . If a policeman sees you, he (confiscate) the camera.

Tom to Jack, who has just helped him to change a wheel: I (have) to leave this at the garage; i don´t know how to mend a puncture in a tubeless tyre.
Jack: But it´s quite easy. I (come) round this evening and show you if you like.
Tom to wife : I (take) te tyre to the garage.
I am goin to mend it myself. Jack (help) me.

Why are you rolling up the carpets? (paint) the ceiling?
No (take) the carpet to cleaner´s.

Ann: Here´s the letter to the landlord. If there´s anything I should add, say do and I (add) it .
Peter: It´s fine, but it´s illegible. He (not be able) to read it.
Ann: Oh, I (type) it ! ( she had always intended to type it)
Peter: good, then we (have) a copy.