题目内容

—Flight CA 581_____________. I must be off now.   —Have a nice trip.
A．is being announcedB．has announcedC．was announcingD．will be announced
A
本题考查时态和语态。从语境知“CA 581航班正在通知(登机中)”，此处强调“现在这个时刻正在进行”的动作，所以用现在进行时，同时announce与Flight CA 581又是动宾关系，故用“现在进行时的被动语态”。
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