А.
1. it's a fact that,
studies show that,
2. research has show that,
the research indicates that
3. i'm certain that
it's possible that
4. it's certain that
i know that
B.
1. a. mobile phones make life easier.
b. mobile phones can have disadvantages.
2. a. studying abroad is paid and requires a considerable amount of money.
b. studying abroad improves other language courses as well .
3. a. sleep helps improve blood circulation
b. person can see the future while sleeping
Объяснение:
еще один Сасори)
