---You ____ him more help, even though you were very busy.
---Well, now I regret not.
| A．might have given | B．may give |
| C．must have given | D．should give |
I waved to Nancy, but she was ______ in her thoughts, and made no response.
| A．involved | B．stuck | C．absorbed | D．interested |
You must observe and gather information like Nicolaus Copernicus ________ you want more career advancement opportunities.
| A．or | B．because | C．unless | D．if |
_______ in this way, the result seems unsatisfactory, so we’d better have another try.
| A．To look at | B．Looking at | C．Looked at | D．To be looking at |
. When he fell over his own feet, his left ankle was sprained, his right hand became ______ and his nose______.
| A．swelling; bleeding | B．swollen; bled |
| C．swelling; bled | D．swollen; bleeding |
. This English newspaper is believed to be a highly valuable one that ________ many events not found in other newspapers.
| A．writes | B．covers | C．prints | D．reads |