你觉得有人在窃听我们的电话吗？

Do you think someone is ___listening ___in on our phone calls?

怀疑有不当行为，她在他的办公室安装了窃听器来偷听他的会议。

Suspecting foul play, she bugged his office to ___listen ___in on his meetings.

这名记者被抓住偷听了私人谈判。

The reporter was caught ___listening ___in on the private negotiations.