Please Proofread the following sentences:
1) I would grateful if you could tell us the information.
2) We look forward meeting you soon.
3) I do agree to you.
4) Recently, we have received a lot of complaint from customers.
5) They arrive at the place altogether.
6) I am writing in reply for your letter dated 20 June 2003.
7) You need more information, please feel free to call me at 24681357.