To become effective at using them, a teacher must be properly trained.
Don't you think that at a certain size every family company needs the experience of a properly trained top team?
In order for player's skills to increase, players must be properly trained.
Perhaps it was my fault in not training that one properly.
But the properly trained mind, on the other hand, has no limits.
Not only is it one third of the price but the staff have quite obviously been properly trained.
Very few are trained properly, even though the number of training schools tends to increase.
State officials watched to determine whether the staff was properly trained.
"The trick is to make sure that workers are properly trained."
A properly trained adult must be present at all times when distance learning students meet as a group.