In our class, when the bell rang and the teacher closed his book, it was a for everyone to stand up.
| A．signal | B．chance | C．mark | D．measure |
The film star was surrounded by the audience ___________ he stepped off the stage.
| A．at once | B．the instant |
| C．now that | D．at the moment |
Once lost, _____________.
| A．it is difficult to get such a chance again. |
| B．such a chance will never come again. |
| C．one can never get such a chance. |
| D．to get such a chance will be difficult. |
us to finish the work today and I’ll be pleased to go.
| A．Join | B．Joining |
| C．If you join | D．To join |
Some insects ________the colour of their surroundings to protect themselves
| A．take on | B．take in |
| C．take off | D．take up |
—What about talking with others while learning spoken English?
—In my opinion,.
| A．it makes sense | B．It’s out of the question |
| C．it’s up to you | D．it’s hard to say |