________ from the top of the tower, the south foot of the mountain is a sea of trees.
| A．Seen | B．Seeing |
| C．Have seen | D．To see |
I'm amazed to hear from my school teacher again.Believe it or not, it's ten years ______ we metlast.
| A．when |
| B．since |
| C．before |
| D．that |
I didn't want ______ stupid but I just stood before my classmates with nothing in my head.
| A．to sound |
| B．to be sounded |
| C．sounding |
| D．being sounded |
______time went on, the situation was improved.
| A．As |
| B．With |
| C．While |
| D．Since |
______my explanation, he finally understood the difference between the two words.
| A．Because |
| B．For the reason |
| C．As |
| D．As a result of |
-Didn't you have a good time at the party?
-Of course I did. As a matter of fact, I had such fun that time seemed to ______ so quickly.
| A．go by |
| B．go away |
| C．go out |
| D．go over |