Explorer Robert Ballard searched the sunken ship---the Titanic for more than 20 years and also, with his cameras, he _____ the hole along the side of the ship which had caused it to fill with water and sink.
| A．could find | B．managed finding |
| C．succeeded to find | D．was able to find |
— Have you moved to your new house?
— Not yet. My house ______.
| A．has been painted | B．is painted |
| C．is painting | D．is being painted |
With nothing ______to burn, the fire became weak and finally died out.
| A．leaving | B．left |
| C．to leave | D．leave |
To the great ______ of the young writer, his first book sells well after it was published in May.
| A．silence | B．respect |
| C．satisfaction | D．congratulation |
The time she has devoted in the past decade ______ the disabled is now considered to be very valuable.
| A．helping | B．to help |
| C．to helping | D．for helping |
—Do you still remember the days ______ we spent in the countryside ten years ago?
—Yes，I'll never forget the experience.
| A．that | B．when | C．on which | D．what |