Paragraph TwoSending someone a voice message on WeChat usually tells them: “I'm obviously more important than you.” It's almost always used in asymmetric relationships: when a boss is communicating a directive to a subordinate, for example. So, do not send voice messages in a professional situation unless the recipients really consider you to be their boss.Be c______ when using voice message on WeChat.
【正确答案】：cautious/careful