be certain of

“We had to be certain of our ground,” said Baroness May, describing the “pin-drop” silence as she stood in the House of Commons to accuse Russia.

The Season 2 premiere served up Blood and Cheese on a platter, but for those just catching up, it may be hard to be certain of what just happened.

Like they did against PNG, West Indies should, in theory, make light work of Uganda, but will by no means be certain of victory against New Zealand and Afghanistan.

City needs to win its final game of the season to be certain of winning the title ahead of second-place Arsenal.

While the title is still in City’s hands, it will have to win the remaining two games to be certain of a record fourth-straight English league title.