——What about the protection?
——Let us keep the surface dirt by putting a cover over it.
| A．far from |
| B．free from |
| C．apart from |
| D．away from |
The Great Wall travel _______deep valleys, ________deserts and ________mountains.
| A．over, across, through | B．through, over, across |
| C．across, through, over | D．through, across, over |
The two boys fought and fought until one_____________.
A. gave up B. gave in C. gave away D gave off
What an important role the Internet _____ in our life! One can hardly imagine ____ life would be like without it.
| A．plays, how | B．is, however | C．uses, what | D．plays, what |
He looked at the envelope(信封) and _____ Jenny’s handwriting immediately.
| A．realized | B．recognized | C．reminded | D．remembered |
American English has changed _______ the centuries. There are several reasons _____ this.
| A．over, for | B．for, with | C．in, of | D．during, about |