The song is sung all over the country, ______ it the most popular song this year.
He ______ at once when I promised to help him.
After going into the concert hall, the mother _____ a friend and went over to greet him.
According to the school rules, no student __________ go out of the school after eleven o’clock at night without the teacher’s permission.
Going on a trip into space must be quite exciting experience.
After the school sports, our headmaster ______ the prizes.