问题
选择题
It is when the plane that you’d better find out at the book office.
A．will take off
B．is going to take off
C．is taking off
D．takes off
答案
答案：D
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It is when the plane that you’d better find out at the book office.
A．will take off
B．is going to take off
C．is taking off
D．takes off
答案：D
