问题
Hurry! The plane ________. You know, it ________ at 3:15.
A:takes off, takes off
B:is taking off, takes off
C:takes off, is taking off
D:is taking off, is taking off;
B:is taking off, takes off
C:takes off, is taking off
D:is taking off, is taking off;
正确答案是：
