问题补充：
Hurry up, Mike. You must get to the airport an hour before the plane .
A. gets off
B. turns off
C. takes off
D. puts off
答案：
A. gets off
B. turns off
(答案→)C. takes off
D. puts off
解析：考查动词词组的词义。gets off “下车”；turns off“关闭”；takes off “起飞”；puts off“推迟”。句意为“快点，麦克。 你必须在飞机起飞一个小时之前到达机场”。故选C。
