The robber was guilty _________ computer crimes in the past.
| A．of | B．from |
| C．off | D．on |
I like music that I can dance _______.
| A．from | B．by | C．with | D．to |
In the past the children were made ______15 hours a day.
| A．to lock | B．work | C．to work | D．lock |
When I got to school, Amy ______his homework.
| A．had invented | B．had finished | C．had developed | D．had rushed |
Did you see Peter and Mike? No, I saw ______of them.
| A．neither | B．either | C．both | D．none |
Gina loves singers _______ write their own music.
A. which B. who C. has worked