Sugar is uncountable; therefore, the sentence has a singular verb. Marbles are countable; therefore, the sentence has a plural verb. 3. Compound subjects joined by and are always plural. 4. With compound subjects joined by or/nor, the verb agrees with the subject nearer to it.
Panic disorder causes panic attacks spontaneous feelings of anxiety, terror, or impending doom. Physical symptoms include heart palpitations, chest pain, and shortness of breath. These attacks may be repeated at any time. People with any type of anxiety disorder may have panic attacks.
You might be irritable or easily scared. You might even feel depressed because of your constant state of worry and stress. Eventually, chronic anxiety can cause long-term symptoms including muscle aches, sweating, fatigue, upset stomach, shaking, and insomnia. During a panic attack, you may have trouble breathing, and you may experience symptoms of dizziness, blurred vision, and rapid heartbeat.