I would appreciate it if you tell me the way you thought of ______ the difficulties,
| A．smoothing away | B．to smooth away |
| C．doing away with | D．to smooth over |
The ground is slippery. Hold on to the rope and don’t ______.
| A．put off | B．turn up |
| C．let go | D．take apart |
Only when the war was over ______ to his hometown.
| A．did the young soldier return |
| B．the young soldier returned |
| C．returned the young soldier |
| D．the young soldier did return |
I found ______ flowers on my way to the countryside last weekend.
| A．some beautiful little red |
| B．some little red beautiful |
| C．some red little beautiful |
| D．some little beautiful red |
I first met Mr. Smith in America. He ______ at Stanford University then.
| A．studied | B．has studied |
| C．is studying | D．was studying |
To be on the safe side, we should fill up the tank now, because we ______ run out of gas on the way.
| A．could | B．might | C．would | D．must |