It be the vocabulary that caused you the problem in the exercise because you know a lot of words.
The singer and dancer _____ asked to sing a song in public, and she agreed happily.
Although the teacher didn’t mention any names, everybody knew who he was ______.
—How do you find that Beatles’CD? —Wonderful. It’s well worth ______.
. I was glad to meet Jenny again,I didn't want to spend all day with her.
This is a picture of ______, taken from twenty years ago.