_____ full preparations, we decided to put off the meeting till next week.
| A．We did not make | B．Having not made |
| C．We had not made | D．Not having made |
He suddenly appeared on ____ rainy night, which was ____ great surprise to us.
| A．a; / | B．the; a | C．a; a | D．the; the |
The Great Wall is ________ place that millions of people pay a visit there every year.
| A．so a well-known | B．a so well-known |
| C．such well-known a | D．such a well-known |
This is a very special flower and it can ________ a strong sweet perfume(香味) at night.
| A．give in | B．give up | C．give out | D．give away |
______ we know, the air quality in the city has improved over the past two years.
| A．That | B．As | C．What | D．It |
We sometimes have to meet some difficulties, but we should develop a good attitude _______ life.
| A．in | B．on | C．at | D．to |