Don’t touch the machine_________ the teacher allows you to.
| A．if | B．unless | C．since | D．that |
Tom, _____ your room, it’s too dirty.
| A．cleans | B．to clean | C．clean | D．cleaning |
----- _____ does he like the book ? ----- He loves it.
| A．Why | B．What | C．How | D．Where |
There are ____ people in the train.
| A．three hundreds | B．three hundreds of |
| C．hundred of | D．hundreds of |
The students in the village _____ the river to school _____ ropeway.
| A．cross,on | B．across,by |
| C．cross,by | D．to cross,on |
It’s difficult for girls _____ soccer well.
| A．play | B．to play | C．playing | D．plays |