Вопрос по английскому языку:

Прошу
Задание 2. Перепишите предложения, подчеркните модальный гла-
гол и переведите предложения на русский язык.
I. Biologiste could not find an answer to this question.
2. You must know these rules.
3. "He is to come very soon.
Задание 3. Перепишите предложения и переведите их, обращая
внимание на эмфатический оборот "1t is (was) ... who ( thаt )...".
I. It was after the expedition that he began writing a new
book.
2. It 18 fire that can be useful in many ways.
Задание 4. Перепишите предложения и переведите их, обращая
внимание на перевод слов " it", "there".
I. It is unlikely that this continent will be thoroughly ex-
plored in the XXth century.
2. There are about 3,000 different languages used in the
world today.
3. It seems probable that language was fully developed by
about 25,000 years ago.

Пожалуйста, помогите , очень срочно нужно