■ congratulations

这个意为“祝贺”的名词，必须用复数形式（祝贺的原因前面用介词 on）。

• Let me offer you my congratulations on your success.请让我对您的成功表示祝贺。

• occupy
• occur
• of
• of
• of a
• of all
• off
• offend
• offer
• office
• off of
• of itself
• of one's
• often
• oil
• old
• on
• on
• on a first-name basis
• once
• one
• one
• one in
• one in 与 one out of
• one of