不明飞行物的英语缩略形式是_________.
Here are some . Do you like ?
—Excuse me, can you tell me ? —At about 8 o’clock.
I think the first lesson we are learning is very easy.
—It’s too cold today. Would you mind the window? —Certainly not. Go ahead.
—Mum, shall we have lunch? —We will have it when your dad .