I know only a little about this matter; you may ask ____ knows better than I.
| A．whoever | B．whomever | C．anyone | D．the one |
—I don’t believe we _______ before.
—Well, I saw you once at a party, but we ______ introduced.
| A．have met; weren’t | B．met; weren’t |
| C．have met; haven’t been | D．met; haven’t been |
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 |