________ you to be the first to solve the structure of DNA?
| A．What you think led | B．What do you think led |
| C．Do you think what led | D．What led you think |
The old man sat in front of the television every evening, happy ____ anything that happened to be on.
| A．to watch | B．watching | C．watched | D．to have watched |
—How is your recent trip to Mountain Huangshan?
—I’ve never had one before.
| A．a pleasant | B．a more pleasant |
| C．a most pleasant | D．the most pleasant |
My cousin went to Australia two yours ago．He____ there for a few months and then went to New Zealand．
| A．worked | B．would work |
| C．would be working | D．has been working |
Four of Robert’s children were at the party, including ____, Luke.
| A．the oldest | B．an oldest one | C．old | D．an old one |
It is generally accepted that ___ boy must learn to stand up and fight like ___ man.
| A．a; a | B．a; the | C．the; the | D．a; 不填 |