The bus driver calls attention because ______.

(单选题)Carey, along with two other students, ______ to read books i (单选题)Betty was just about ______ when her friend arrived. (单选题)Which of the following pair of words contains the same vowel (单选题)What impressed the scientists most according to the text? (单选题)Why did Joshua Klein design the experiment? (单选题)What can we learn from Paragraph 2? (单选题)How did Betty get the meat from the test tube? (单选题)What does the underlined word “arduous” in Paragraph 5 mean? (单选题)What is Paragraph 4 mainly about? (单选题)What do the special days in Paragraph 3 have in common?