He enjoys diving in the sea every weekend.

He started writing notes on the staff.

He was entrusted with the song selection for the party.

He is selecting music for the party.

Writing a declaration is difficult.

The demarcation of this area is clearly defined.

We decided to demarcate this land.

The first day of the month is the beginning of a new month.

I will hold my birthday party on the fifth day of the month.

Every sixth day of the month, we go on a picnic as a family.