I would like to express my sincere thanks for your invitation to speak at theComputer SpecialistExpo on the 26th of September. Unfortunately, I will be out of town that week to give a seminar at New York TechnicalArtsCollege for the Semiconductor TechnologyAssociation, so I will not be able to be part of the program. Otherwise, I would have gladly (144) your invitation, If you don’t have another person in mind, you might consider inviting Victor Holmes, who (145) a prominent researcher in the filed of computer hardware technology for the last decade. I worked with Victor for two years when I was with Mega system Tech and recommend him highly, as he is a brilliant researcher. I am sure that you will find his (146) very useful and interesting. I wish you a very successful evening. Thank you for considering me as a speaker. If the date for the event changes, or you would like to contact me for any other reason, please don’t hesitate to call me. Sincerely, Gary Sampras A、will be B、was being C、has-been D、have been