问题

Flight 551 for Dalas ______ I must beoff now — Have a pleasant trip then

A:is being announced
B:has announced
C:was announcing
D:had been announced

正确答案是：

同类题型

It was _____ several years ____ I had an opportunity of seeing the bird again .

下列词语中加点的字，每对读音都相同的一组是（）

I think a good friend makes me______.

下列各句中，没有语病的一句是（）

. Now everyone is concerned of living.