詢問信句型: 1) i am desirous of joining some appropriate program offered there.2) i should like to know the details about the courses, teachers, time availability…3) i am looking forward to your early reply.dear sirs,i learned from the advertisement that you are a leading institution in language training in our city. i am desirous of joining some appropriate program offered there so as to improve my english ability. i should like to know the details about the courses, teachers, time availability, price or even some samples of your textbooks if available.i am looking forward to your early reply.truly yours,wang lil useful expressions1) we are in need of the… and would appreciate your information regarding yours.2) we are thinking of…, please send us some samples if available.3) hoping to hear from you soon.