---Have you ________?---No. I had the wrong number. 

I’ll never forget the good trick my classmates ________ on me when I was in the primary school.

The teacher told the students that they______ to be useful men to the country. 

–The Wall Street Journal is giving me a laptop with Windows XP, an operating system I found satisfying when it first _____ eight years ago.–Are you sure? You must be talking big.

After going into the concert hall, the mother _____ a friend and went over to greet him.