The phrase "activities that were once" is correct and usable in written English.
It can be used to refer to actions or events that used to occur in the past but may not be happening currently.
Example: "The activities that were once popular among teenagers have now shifted to digital platforms."
Alternatives: "activities that used to be" or "activities that were previously".
However, many young people from a generation Christian leaders thought would be able to continue their work are now to be found in the mosque or Islamic centre establishing the type of community activities that were once the preserve of the church.
Technology is meant to improve our lives and bring added convenience to activities that were once cumbersome.
The company has partnered with San Francisco-based startup Fingerprint to help transition the brand – and the activities that were once found within its printed pages – to mobile devices.
Likewise, while religious freedom rightfully remains a core tenet of our national psyche, some of the activities that were once practiced by people citing their faith are no longer legally allowed.
Performing activities that were once taken for granted, unconscious acts often became more conscious movements.
An activity that was once reserved for sitting down, or for, at most, leisurely strolls through the park, has become a crucial time-saving part of many urbanites' daily routines.
An activity that was once regarded as peripheral, perhaps even reprehensible, has become cool, celebrated by politicians and embraced by the rising generation.Britain's Oxford University used to nurture one of the longest traditions of anti-entrepreneurial prejudice in the world.
Stating things in a positive way will associate your partner (at least mentally) to that time or activity that was once so hot and exciting for you and it will provide positive reinforcement to him or her and increase the likelihood of the act happening again.
Work plans that were once focused on normal social work activities changed to supporting families without food or shelter.
In our own country, streams that were once drinkable no longer are as a result of human activity.
ALL this activity is occurring in a market that was once one of the hottest categories in the car business, but which has long since slumped.
