The change was so _____ that we hardly noticed it.
| A．actual | B．frequent | C．gradual | D．grateful |
While he was investigating ways to improve the telescope, Newton made _______ discovery which completely changed _______ man’s understanding of colour.
| A．a；/ | B．a；the |
| C．/；the | D．the；a |
After dinner he gave Mr. Richardson _______ ride to _______ Capital Airport.
| A．the；a | B．a；the |
| C．/；a | D．/；the |
It’s _______ bad manners to blow your nose at _______ table.
| A．/; the | B．the; a |
| C．/; / | D．the; / |
George. W. Bush, _______ President of the United States, is to visit China _______ third time.
| A．a；a | B．the；a |
| C．/；a | D．/；the |
Don’t worry if you can’t come to _______ party—I’ll save _______ cake for you.
| A．the; some | B．a; much |
| C．the; any | D．a; little |