昨晚的派对上我们都开了玩笑，玩得很开心。

We all ___joked and had a great time at the party last night.

这是个严肃的问题，所以请不要拿它开玩笑。

This is a serious matter, so please don't ___joke about it.

当我听到这个消息时，我简直不敢相信，还以为你肯定是在开玩笑！

When I heard the news, I couldn't believe it and thought you must be ___joking!