Professor Green ______ English literature for nearly 20 years in the University of Southern California.

(单选题)What can be learned from Dr. Kaminski? (单选题)What is most likely to work on dogs’ communicative ability d (单选题)The underlined word “dropped” (Line5, Para7) means “______ ” (单选题)What is the key information the author wants to say in Para. (单选题)For which of the following reasons will Door2Door be able to (单选题)What is the purpose of the letter? (单选题)What kind of business is being advertised? (单选题)Which is the best title for this passage? (单选题)What’s the writer’s attitude to new technology? (单选题)Which of the following sentences is NOT true?