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.
1 When you have an anxiety attack, you tend to breathe in a way that takes in too much oxygen, often breathing too quickly or in a way that isn't ideal for your body. 2  Slow down your breathing as best you can, and hold your breath a bit to regain your CO2 levels and prevent hyperventilation symptoms.