While he was investigating ways to improve the telescope, Newton made ______ discovery which completely changed ______ man’s understanding of colour.
| A．a; 不填 | B．a; the | C．不填; the | D．the; a |
——You didn’t invite Mary to the ball?
——____ her, too?
| A．Must I invite | B．Should I have invited | C．Must I have invited | D．Should I invite |
The car ____ at the present speed until it reaches the foot of the mountain at about nine o’clock tonight.
| A．went | B．is going | C．goes | D．will be going |
In 1927 Benjamin Franklin founded one of the first adult-education organizations, ____ the Junto.
| A．has been called | B．to call | C．a group called | D．which group called |
——He looks very hot and dry.
——So ____ if you had a temperature of 103.
| A．would you | B．will you | C．would you have been | D．do you |
____ children tend to prefer sweets to meat.
| A．The most | B．Most | C．Most of | D．The most of the |