问题补充：
—When are you leaving for Guangdong?
—My planeat six．
A. took off
B. would take off
C. will take off
D. takes off
答案：
A. took off
B. would take off
C. will take off
(答案→)D. takes off
解析：句意：--你什么时间动身去广东？---我的飞机在6点钟起飞。一般现在时可表示按规定、计划或时间表将要发生的事。如：He starts next week.他下个星期出发。The train starts at 10 oclock in the morning.火车将在早上10点开出。这类用法限于表示“移动”的动词：go去，come来，leave离开，start出发，begin开始，arrive到达，take off起飞，等。故D正确。
