While he was investigating ways to improve the telescope, Newton made __ discovery which completely changed __ man’s understanding of color.
| A．a, / | B．a, the | C．/, the | D．the, a |
This is the knife _____ I cut apples yesterday.
| A．that | B．by which | C．which | D．with which |
E-mail, as well as telephones, _____ an important part in daily communication.
| A．is playing | B．have played | C．are playing | D．played |
The girl said she would buy a gift for her sister with the _____ money.
| A．remaining | B．remained | C．leaving | D．left |
If you are _____ about Australian cities, just read the book written by Dr Johnson.
| A．interested | B．anxious | C．upset | D．curious |
He _____ to us that those eggs which were _____ on the table had been _____ by snakes.
| A．lied; laying; lied | B．lied; lying; lain |
| C．laid; laid; laid | D．lied; lying; laid |