Why does David go to Professor Smith for help?
【正确答案】 B
【答案解析】
单选题 What should David do at the start of each class?
【正确答案】 A
【答案解析】
单选题 How can David find the most important information to write down?
【正确答案】 C
【答案解析】
单选题 How many suggestions has Professor Smith given to David?
【正确答案】 B
【答案解析】