Choose the correct time expressions to complete the sentences.

1 l usually take a break from my screen right now/from time to time to give my eyes a rest.
2 According to my phone, I've spent sixty-seven minutes online since nine o'clock / ever since.
3 We've been learning about ancient methods of communication at school recently / last week.
4 I forgot my password and blocked my email account the day before yesterday / in recent weeks.
5 It's getting more and more difficult to maintain face-to-face communication nowadays / at the time.
6 We were walking on the beach earlier today / once in a while when we found a message in a bottle.