Question

There ____________________ a party here yesterday.
The room is dirty and everything is a mess:
should be
must have been
must be
can ́t be
should have been

Answer 1

Resposta:

There MUST HAVE BEEN a party here yesterday.

The room is dirty and everything is a mess

Explicação:

Should traduz para Deveria, o que demonstra incerteza

Must traduz para Deve, o que demonstra certeza

O que solidifica o uso do Must é o fato da fala ser afirmativa

Espero ter ajudado!