3、 You can’t plug _____ the memory stick when the light is flashing. Otherwise, the system data may be damaged 。
举一反三
- A：Must I turn off the light when I leave? B:No, _____. A: you mustn't B: you can't C: you needn't
- –Don’t forget to turn off the light when you leave. --- I _________. A: mustn’t B: won’t C: don’t D: can’t
- As you approach Old River Control Structure Light you see a flashing amber light. You should（）.
- When you want to express your surprise, you may say________ A: Are you serious? B: I can’t believe it C: Fancy that! D: What a surprise!
- You can choose any information or data from the graph when you describe a graph.