---There is somebody knocking at the door. Who________ it be?---I’m not sure. It ________ be a postman.
Although he’d eaten up two bowls of rice, he still didn’t feel ____.
When I stepped into the classroom, I saw the teacher _____ out the test papers.
My cousin is a secretary. She ______in that company for over six years.
I’m sorry to keep you ______ for an hour. Now let’s begin our work.
-How do you like Shu-How Lin?-Very much. I think he is one of __________players in NBA now.