问题详情：
在横线上填入适当的单词，补全对话。
A: Hi, Mingming, what are you doing?
B: I am 1 TV.
A: Do you 2 why we can watch TV programs 3 foreign countries?
B: Sorry, I don’t know. Why?
A: That’s because of man-made satellites.
B: Can they send and 4 messages?
A: Yes, they can.
B: How useful they are! We must study hard to 5 the technology.
【回答】
1 hing 3 4 receive er
知识点：补全对话
题型：补全对话
