We'll have to make certain preparations and they'll take time.
It was a normal enough order, relating to certain preparations.
Letting Waters talk through her approach to certain preparations works particularly well.
But, without making any answer in words, Maid began certain preparations.
After making certain preparations, Poirot went to bed, but not to sleep.
One supposes they will make certain preparations for those attempts.
We sailed for America, and there made certain preparations.
Team's members can choose between 4 specialized groups to have a certain preparation beside the basic training to react on situations.
Then she spoke no more for a while, but busied herself with certain rather eerie preparations.
Tell your master that for a trip of this length certain special preparations must be made.