题目内容

用 I have done 或I have been doing 填空。 A: Is Joe watching TV? B: Yes, he ___________ (watch) TV all day.

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用 I have done 或I have been doing 填空。 A: I know Simon. B: How long _________ (you/know)him?

用 I have done 或I have been doing 填空。 You see somebody fishing by the river. You ask:__________ (you/catch)any fish?

用 I have done 或I have been doing 填空。 You meet a woman who tells you that she teaches English. You ask her: How long ________ (you/teach) English?

（多选）移动电子商务主要提供的服务有（）。

A. 娱乐
B. 金融
C. 购物
D. 交易