Peter ________ the papers he was marking and reached for his cigarettes and matches.
---Where did you ________ our chemistry teacher?--- It was in the supermarket ________ I bought the moon cakes.
John is the only one of the students in our class that never ________ a mistake even when it is pointed out to him.
Only after leaving home ________ the true meaning of the proverb, “East or west, home is best.”
--- Why do you suggest Mount Lu?--- I believe________ beauty of nature there will make________ excellent impression on you.
-–Could you take my place and go to meet Smith?---________.--- He is a tall man wearing short hair.