so I choose to use the past simple passive. But their injuries are still evident at the present time, so I could have used the present perfect passive. There are no time phrases in this example to ...

1. The voice of the verb is distinct from its tense. Don't confuse the passive voice with the past tense. (Sentence 2 happens to be in the past tense, but 3 is not; both 2 and 3 are in the passive ...