Английский язык. Помогите определить время и залог в предложениях.

1. True regularities must be established by detached examination of data. - must be established - Present Simple (Indefinite) Passive.
2. Regularities, even when expressed mathematically as laws of nature, are not fully satisfactory to everyone. - are not - Present Simple Active.
3. But even if causation and explanation are admitted as necessary, there is little agreement on the kinds of causes that are permissible, or possible, in science. - are admitted - Present Simple Passive; are (permissible (possible)- Present Simple Active.
4. This second scientific revolution may prove to be, for good or ill, the most important event in the history of mankind. - may prove - Present Simple Active; to be - the Infinitive.
5. There are many regularities in nature that mankind has had to recognize for survival since the emergence of Homo sapiens as a species. - (There) are - Present Simple Active; has had - Present Perfect Active; to recognize - the Infinitive.

1) Present Simple, the Passive Voice
2) Present Simple, the Active Voice
3) 1. Present Simple, the Passive Voice (are admitted) 2. Present Simple, the Active Voice (there is)
4) Present Simple, the Active Voice
5) 1. Present Simple, the Active Voice (there are) 2. Present Perfect, the Active Voice (has had to recognize)

Надеюсь, помогла :-)