The young man made a _________ to his parents that he would try to earn his own living after graduation.
_____ 20 girls Class 10 ______ another 30 boys.
He used to be a popular singer, but drug ____ his ruin.
The Group of Eight (G8) ______ the eight richest countries in the world.
I recognized her ______ I saw her.
I ate sandwich while I was waiting for 20:08 train. (2008陕西卷)