单项选择题
M: Uh-uh. Look! I’m going to be a little late for class.
W: You do need to hurry up!
M: I hope Prof. Clark doesn’t start on time today.
W: Are you kidding You can set your watch by the start of his class.
A. He has been unpredictable lately.
B. He is usually punctual.
C. He advised his students to wear watches to class.
D. He rarely notices when students are late.