1. The group of friends conspired to surprise their friend on her birthday.
Translation: O grupo de amigos conspirou para surpreender a amiga no seu aniversário.

2. The employees conspired to undermine their boss's authority.
Translation: Os funcionários conspiraram para minar a autoridade do chefe.

3. It was rumored that the politicians conspired to rig the election.
Translation: Rumorava-se que os políticos conspiraram para fraudar a eleição.

4. The siblings conspired to play a prank on their parents.
Translation: Os irmãos conspiraram para pregar uma peça nos pais.

5. The criminals conspired to rob the bank under the cover of darkness.
Translation: Os criminosos conspiraram para roubar o banco sob a cobertura da escuridão.

6. The rival companies were suspected of conspiring to fix prices in the market.
Translation: As empresas rivais foram suspeitas de conspirar para fixar preços no mercado.