— Kitty, do you know ______?
— Sure, about forty minutes.
| A．when did their class meeting begin. |
| B．where their class meeting was held |
| C．how often their class meeting is held |
| D．how long their class meeting will last |
I had to call a taxi because the box was _______ than I’d expected.
| A．heavy | B．heavier | C．the heavier | D．the heaviest |
--- Do you know who designed the CD-ROM Around the World in Eight Hours?
--- Yes. It ______ by Nancy Jackson.
| A．has designed | B．designed | C．designs | D．was designed |
--- I feel tired and sleepy.
--- Why not stop ______?
| A．relaxing | B．to relax | C．resting | D．to work |
--- Betty, could you answer my question?
--- Sorry, Mr. Green. I didn’t hear you. I _______ about something else.
| A．was thinking | B．am thinking | C．think | D．thought |
--- I won’t have time to go shopping with you this afternoon.
--- But you ________ me yesterday.
| A．ordered | B．mentioned | C．promised | D．knew |