用方框中所给单词的适当形式填空，使对话通顺、正确。每词仅用一次（每空一词）。

at      wide      customer      happen      anyone

You buy a new toy online. It should come today. Knock, knock. You open the door, but can't see   . Youlook  again: a drone (无人机) has put the  package (包裹) at your  door! Unbelievable, right? But drone delivery (送货) is really  around  the  world. In 2016, Amazon used a drone to deliver goods in the UK. It flew for 13 minutes to get to a   home. In America, 7-Eleven has     used a drone to deliver a sandwich and coffee. In China, S.F. Express, China Post and JD.com are also considering trying to use drone delivery  present.