---Has Ingid handed in her paper yet? ---I’m not sure. She _______ on it last week.
While visiting the robot exhibition, the professor kept nodding his head to express his _______ with his students’ work.
Who was it _______ wanted to see me just now?
Do you think the reason _______ he gave is believable?
_______ his membership card, Tony decided to make a phone call to check whether there was something wrong.
It’s years since I _______ him last time, and I haven’t written back to him.