Liu Fang is a company CEO now, but she ____ as a teacher in a middle school for three years.
It was the first time that Mary _____a play , so she felt a little nervous.
The old man walks_____ dog after _____ supper every day.
My suggestion is that he _________to see a doctor at once.
Helen had to shout ________above the sound of the music.
I don’t know ______ tomorrow. Can you tell me?