从方框中选出适当的句子补全对话，其中有两项是多余的。 A: It's very
题型：补全对话，情景问答
问题：
| 从方框中选出适当的句子补全对话，其中有两项是多余的。 | |
| A: It's very late. Are you still on the computer? B: Well, yes. 1 A: What kind of e-mails? B: Some are messages from my friends and some are from the relatives. A: Do you have to write them back right away? B: 2 Usually people want a quick reply. A: 3 B: I've already had 40 people's addresses in my address book! 4 A: 5 E-mail is really very convenient (方便的).
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