It may be necessary to stop _____ in the learning process and go back to the difficult points in the lessons．
| A．at intervals | B．at random |
| C．at ease | D．at length |
Michael’s new house is like a huge palace, ______with his old one.
| A．comparing | B．compares | C．to compare | D．compared |
—You are confident about the job interview , aren’t you?
—_____.I’m well prepared and feel I’ve got everything they need.
| A．sure, I am | B．It’s hard to say |
| C．I hope so | D．Well, maybe |
She stared at the painting ,wondering where she ______it.
| A．saw | B．has seen | C．sees | D．had seen |
Over the past 20 years, the Internet helped change our world in _____way or another for the better.
| A．any | B．one | C．every | D．either |
Try on this red skirt; you will look great _____it.
| A．on | B．by | C．in | D．for |