You’d better not ring me up between 9 and 10. I________ an important meeting then” Dr. Lee said.
We go to school every day _____ Saturday and Sunday. [ ]
The clothes are _______ for twenty yuan.[ ]
He was crossing over to _____ side of the road when I saw him.
Have you eaten your hamburger, Sue ? —Yes. But I’m still hungry. Could I have a ________ one please ?