You can go to 
the newspaper library and _____ any information you need for your new story.
| A．look for | B．look up | C．look at | D．look into |
The children enjoyed ______ round the newly polished floor.
| A．sliding |
| B．slid |
| C．to slide |
| D．being slid |
It is a waste of time ______ him – he is determined to go his own way.
| A．warning |
| B．warned |
| C．warn |
| D．having warned |
He began ______ in the early fifties, singing and ______ the guitar.
| A．performing; play |
| B．performed; played |
| C．performing; playing |
| D．performed; playing |
I saw her ______ the letter into the envelope and then ______ the envelope into the postbox.
| A．stuck; put |
| B．sticking; putting |
| C．stick; to put |
| D．stick; putting |
Do you think, nowadays, the media has become more commercial and ______?
| A．entertained |
| B．entertain |
| C．entertaining |
| D．to entertain |