see that it is done
To make sure or certain that some particular task or objective is accomplished. A: "We need that report finished by Friday." B: "I'll see that it's done." A: "We'll need a higher budget to ship the product on time." B: "Don't worry, we'll see that it's done."
see (to it) that something is done
to make sure of something; to make certain of something; to be certain to do something. The manager saw to it that everyone began working on time. The mayor should see that the potholes are repaired.