—What’s the matter? You looked unhappy.—Well, the teacher spoke so quickly and I can __________ understand it.
Which of the following signs can be seen on the door of a shopping mall?
---Can you tell me what the Olympic motto(宗旨) is?------___________.
---Can you tell me something about Liu Yang?---Oh, she _____ the first Chinese woman astronaut to get into space.
— I feel tired and sleepy. — Why not consider_________?
— Attention, please. The plane has to be _________ because of the foggy weather.— Oh, bad luck! We have to wait now.