不明飞行物的英语缩略形式是______。A.UFO B. BBC C. NBA
Look, the old man who is playing guitar is university teacher.
_____, I practice speaking English in the park. The air there is very fresh.
The winter holiday will begin soon. John _____ to stay with us.
The little girl _____ go to school, though she didn’t want to go there.
Peter’s Chinese was very poor when he came to China, so he couldn’t make himself _____.