在别人说话时打断他们是不礼貌的。

It is ___impolite to interrupt someone while they are speaking.

如果你不买东西，一些店员可能会不礼貌。

Some shop assistants can be ___impolite if you don't buy anything.

他在会议上的不礼貌言论让许多同事感到不快。

His ___impolite remarks during the meeting upset many colleagues.