—Hello,may I have an appointment with the headmaster?
—_______.
| A．Sorry,he is busy at the moment | B．No,you can’t |
| C．Certainly.Wait a minute,please | D．Let me see |
.____ the temperature falling so rapidly, we couldn't go on with the experience.
| A．Since | B．With | C．As | D．For |
.--- Do you know Uncle Tom is crazy about gardening?
---Sure. He ____ his flowers in the garden now.
| A．may be watering | B．must be watering |
| C．could look after | D．ought to watch |
.How many foreign friends does he have? ___.
| A．None | B．No one | C．Not much | D．No many |
.The soldiers had worked for a long time.They ___ become tired and hungry, but ___ of them would stop to take a rest.
| A．all…neither | B．both…none | C．all…none | D．both…neither |
.What I want to tell you is ____:The sports meet is put off till next Sunday.
| A．this | B．that | C．it | D．those |