Question

fill in the blank: je sais que tu ne ______ pas.
comprends
comprennes
saches
puisses

Explanation:

In French, after "que" in a declarative sentence with "savoir" (je sais), if the subordinate clause has a negative with "ne...pas" and the subject is "tu", we use the subjunctive? Wait, no, actually, "je sais que..." is a declarative clause, so the subordinate clause uses the indicative. Wait, no, correction: "savoir" (to know) when used to state a fact (je sais que...) takes the indicative in the subordinate clause. But let's analyze the verbs:

• "comprends" is the indicative present of "comprendre" (tu form: tu comprends).
• "comprennes" is subjunctive present of "comprendre" (tu form: que tu comprennes).
• "saches" is subjunctive present of "savoir" (tu form: que tu saches).
• "puisses" is subjunctive present of "pouvoir" (tu form: que tu puisses).

The sentence is "Je sais que tu ne ____ pas." The structure "je sais que..." is a declarative, so we need the indicative. Also, the meaning: "I know that you do not understand." So "comprendre" (to understand) makes sense. So "tu ne comprends pas" is the correct indicative form (tu comprends, negative: tu ne comprends pas). The other options are subjunctive, which is not needed here because "je sais que..." is a statement of fact, so indicative. So the correct verb is "comprends".

Answer:

A. comprends