The phrase "pre-planned activity" is correct and can be used in written English.
It typically refers to an activity that has been planned out in advance, so it can be used to refer to a specific activity that has been scheduled before the particular moment. For example: "We had to cancel the meeting, but we can still go ahead with the pre-planned activity."
So, this was a pre-planned action".
The logistics issues related to availability of students during pre-planned academic activities constrained the sample size.
To understand and formulate this process, not only is it necessary to carry out an extensive pre-planned set of lab activities, but also having a large amount of field data which are gathered under controlled conditions is essential.
The study suggests that in a context when the invitation to join an activity is pre-planned and is to occur in the immediate future, it seems that an imperative and its accompanied elements in the turn convey an insistence and immediacy in getting the invitee to accept the invitation.
In most cases, these activities are pre-planned and regular (on a given day).
Whilst most activities were pre-planned, given the nature of the fieldwork, this was subject to change.
You can either check-in at a venue, comment on your friends' check-ins (with the new chat bubble in the stream), look at the spots around you, see trips (pre-planned venue excursions), or look at your own activity.
We cannot say whether RDU is a contributor to higher risk behaviors, or is a part of a matrix of linked activities, as when high risk sex is pre-planned along with RDU.
Nowadays, all tourism-related activities, from hotel reservations and air tickets to visa applications, are pre-planned online (see Fig. 1).
OR is most likely to be successful when it is carried out in a matrix of basic, clinical, and population activities where scientists from several but correlated disciplines work together in pre-planned and integrated projects.
