握手是商务场合的常见礼仪。

A handshake is a common ___etiquette in business.

在正式晚宴上，正确的餐桌礼仪很重要。

Proper dinner ___etiquette is important at formal events.

在商务会议中，正确的礼仪要求你准时到达。

Proper ___etiquette in business meetings requires you to arrive on time.

外交礼仪要求我们在正式场合必须穿正装。

Diplomatic ___etiquette requires us to wear formal attire at official events.