问题
选择题
— Flight CA 581_____. I must be off now.
— Have a nice trip.[ ]
A. is being announced
B. has announced
C. was announcing
D. will be announced
答案
答案：A
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— Flight CA 581_____. I must be off now.
— Have a nice trip.[ ]
A. is being announced
B. has announced
C. was announcing
D. will be announced
答案：A