Вот решение с пояснениями и итоговым текстом.
- It's like everyone else ...... (have) the time of their lives right now while I ....... (sit) here feeling sorry for myself.
- Правильная форма: It's like everyone else is having the time of their lives right now while I am sitting here feeling sorry for myself.
- Объяснение: "right now" и "everyone else" указывают на действие в настоящем времени; для глагола "have" здесь нужна форма Present Continuous: is having. Аналогично "I am sitting" — Present Continuous для текущего действия.
- I realise that now and then I ......... (waste) too much of my time in my phone.
- Правильная форма: I realise that now and then I waste too much of my time in my phone.
- Объяснение: речь идёт о повторяющемся, регулярно совершаемом действии; используем Present Simple: waste.
- I .......... (do) my best to reduce the amount of time I ....... (spend) on social media daily, but it's really hard.
- Правильная форма: I am doing my best to reduce the amount of time I spend on social media daily, but it's really hard.
- Объяснение: выражение усилий, происходящее в данный момент и в продолжение времени — Present Continuous: am doing. У второстепенного глагола после "the amount of time I ..." обычно используется Present Simple: spend.
- These days, social media .......... (become) a a huge part of our lives, but it's important to remember to take breaks and enjoy real-life experience.
- Правильная форма: These days, social media is becoming a huge part of our lives, but it's important to remember to take breaks and enjoy real-life experience.
- Объяснение: с фразой "These days" часто употребляют Present Continuous для обозначения процесса изменения в настоящем; здесь подходит формула is becoming (Present Continuous). Также можно было бы использовать has become (Present Perfect), но задача ограничена Present Simple/Present Continuous, и здесь предпочтительнее именно длительное изменение.
Итоговый текст с заполненными формами: It's like everyone else is having the time of their lives right now while I am sitting here feeling sorry for myself. I realise that now and then I waste too much of my time in my phone. I am doing my best to reduce the amount of time I spend on social media daily, but it's really hard. These days, social media is becoming a huge part of our lives, but it's important to remember to take breaks and enjoy real-life experience.