She was found sitting in her wheelchair, completely ______ in a fashion magazine her son had just bought.
| A．absorbing | B．absorbed |
| C．being absorbed | D．to absorb |
During the day, we’ll walk across the land, ____ the footprints of big animals.
| A．will follow | B．follow | C．following | D．to follow |
I’ve heard that we can see beautiful stars ____ clear nights.
| A．on | B．in | C．at | D．for |
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 |
My friend Tom stays at Internet bars above 8 hours every day ______, really a netter(网虫).
| A．on average | B．in charge | C．up close | D．for free |
I have many friends, _____ some are businessman.
| A．of them | B．from which | C．who of | D．of whom |