The phrase "activities had started" is correct and usable in written English.
It can be used to indicate that certain activities began at a specific point in the past, often in relation to another event or time frame.
Example: "By the time the guests arrived, the activities had started, and everyone was already engaged in the games."
Alternatives: "activities had begun" or "activities were underway."
By now, our activities had started to modify every one of these components.
"The activities had started about then," Mr. Corigliano told Judge William H. Walls this week, as he pleaded guilty to fraud charges.
Indeed, after CAESAR modelling activities had started, two data collections appeared, one from EURAS [10] and one from Canada [11].
Activities had started with the final Paralympic cauldron to be lit in the home nations ahead of the opening of the Games on Wednesday.
The American is no stranger to endurance activities, having started them 20 years ago when her son urged her to give up smoking.
In the longer term, a marked rebound is likely to be felt once reconstruction activities have started and power supplies have begun to return to normal.
PAGE B2 CHARITY GOES MOBILE Do Something, a national nonprofit group that works to involve teenagers in civic activities, has started using mobile technology in its campaign to sign up 3.8 million members by 2014, in the belief that one of the most effective ways to call teenagers to service is through text-messaging.
Rescue work is continuing and relief activities have started," Irshad Bhatti told Agence France Presse.
Recently, a lot of activities have started to study summability, sequence spaces and related topics in these nonlinear spaces (see, [8 10]).
Recently, a lot of activities have started to study summability, sequence spaces, and related topics in these nonlinear spaces (see, e.g., [5 9]).
This needs a special forest policy but, in the meantime, special management activities have started, and they are stimulated by subsidies.
