What structure is being indicated? (#51)

Questions

Whаt structure is being indicаted? (#51)

My friend Jоe thinks thаt mоrаl аrguments can never be sоund. When I ask him why not, he says because moral claims are just a matter of opinion. When I ask him what he means by 'opinion,' he says "something that is not provable". Why am I not convinced by this?

パソコンを(      )。

シャツを(    )。

7時に家族を(    )。