Be very alert to cars that have slowed to a crawl or completely stopped ahead of you, and keep constant watch on what's happening to your rear. (drive-safely.net)
We keep constant watch on our inbox for responses to resumes. (resumeroom.com)
Ensure the kids are under constant watch of an adult, out of anger, some may decide to take the ball or butt and throw it at their friends leading to serious injuries. (tutusteaparties.com)