问题
选择题
If you’re late for class, Mr. Black will keep you out.
A．won’t let you down
B．won’t let you in
C．will kill you
D．will make you happy
答案
答案：B
题目分析：句意：如果你上课迟到了，布莱克先生将会让你待在教室外面的。分析：keep sb. out意为不让某人进入。结合选项，第二项won’t let you in不让某人进入，与前文同义。故选 B