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(单选题)What is the writer’s main purpose in writing this passage? (单选题)According to the passage, the writer believes that ______. (单选题)If consuming products takes too much time, we should ______. (单选题)The writer will always remember Mr. Ratcliff, because the pr (单选题)The sixth time the writer went to the principal’s office, he (单选题)How did the writer feel when he went to the principal’s offi (单选题)In his seventh grade, the writer ______. (单选题)In the Air and Space Museum, you can _______. (单选题)A 15-year-old student can take part in the programs at _____ (单选题)If you are interested in the program about video arts, you c