I picked up a paper at random , _____ through the headlines and put it where it had been .
| A．looking | B．looked | C．to look | D．and looked |
At the school gate, you should _____ the safeguard with your student card.
| A．present | B．give |
| C．show | D．provide |
Father insisted Tom _____ all his homework before he went to bed.
| A．finishing | B．to finish |
| C．finish | D．finished |
I met this guy _____ some other occasions but he did not seem to recognize me.
| A．for | B．on |
| C．at | D．in |
I don’t like the lecture yesterday. Most of what the speaker said was _____ the subject.
| A．on | B．off |
| C．of | D．around |
The demand for _____ skilled workers is still increasing.
| A．high | B．higher |
| C．highly | D．more highly |