английский, помогите правильно раскрыть скобки

Use the verbs in brackets in the appropriate tense of the Indefinite
group. Translate the sentences:

1. Products of protein, fat, and carbohydrate digestion (to be absorbed)
from the gastrointestinal tract by the liver in which they (to undergo) furthur
chemical processes. 2. The liver (to destroy) toxic substances which usually (to be formed)
in the intestinal tract as well as some poisons which (to enter) the body from
without.

3. Jaundice (to be known) to be the disease which (to be due to) the
presence of a large amount of bilirubin in the blood and tissues.