That is ______ Lu Xun once lived.
| A．what | B．where | C．that | D．why |
It was 4 o'clock when the front doorbell rang. Mrs. Clarke was __________ tea at the time.
| A．cooking | B．making | C．burning | D．serving |
The general asked his men to push _____ so they might overtake the retreating (败退的) enemy troop.
| A．out | B．over | C．on | D．off |
However, it only appears in the imagination and will never be __________.
| A．realized | B．supported | C．understood | D．produced |
At the beginning, I had some difficulty with my English, and my teacher pulled me ______.
| A．down | B．over | C．up | D．through |
Washington D.C. ______ between Virginia and Maryland on the Potomac River.
A. lays. B. lies C. sits D. seats