The boy ________ his book here and forgot ________ it home.
| A．left, took | B．left, to take |
| C．forgot, brought | D．forgot, to bring |
He said that light ______much faster than sound.
| A．has travelled | B．went | C．travels | D．travelled |
I won’t pass the exam ______I work hard..
| A．whenever | B．because | C．if | D．unless |
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 |