Please choose the best words from the box below to complete the sentences. Note: There are more words than you need.

A. rapport；B. concise； C. jargon；D. formal； E. hierarchy； F. prompt

1) For a senior executive you don't know well, it is best to use a _________ salutation like "Dear Ms. Jones," to show respect for the business _________.

2) An effective email body is _________ and avoids using technical _________ that the recipient may not understand.

3) When you have an established _________ with someone, you can move from a formal to a semi-formal tone.