Mary used to _____short hair.
---Your sister _________ a lot during these years. ---Yes. She _________ three years ago.
I _________ great progress in English since I _________ reading novels in English.
To the students, it’s _________ to enjoy a video during the class.
---Have you seen Mr. King these days? ---No, he _________ Shanghai for an international meeting. He’ll come back in three days.
What did you buy _________ your son _________ his birthday present?