(2013·安徽卷)I to my cousin’s birthday party last night, but I was not available
—How can I use the equipment?—Well, just refer to the ________.
—Do you know why Jane was so angry?—Her roommate gave in to ________ and opened the letter addressed to her.
In my brother's absence, I would like to thank all concerned on his ________.
—What does PM 2.5 mean?—It's a professional ________ indicating the condition of air pollution.
It is no ________ pretending you did not know because everyone saw the whole accident.