es malo - it's bad es mejor - it's better es peor - it's worse es posible - it's possible es imposible - it's impossible es probable - it's probable es improbable - it's improbable es preciso - it's necessary es urgente - it's urgent es importante - it's important es interesante - it's interesting es raro - it's unusual/strange es extraño - it's strange es curioso - it's curious es dudoso - it's doubtful es difícil - it's unlikely es fácil - it's likely