It would have to be watch because tense <span>is a form taken by a </span>verb<span> to show the time of an </span><span>action so therefore im 100% sure it has to be watch</span>
Mostly when youre thinking of it, it's present tense while also being future tense as well, could, meaning in the present. For example, "I could do that". More than likely your sentence is in the present
