The first one means that you tried to stop feeling nervous or you tried to swallow so much that you couldn't.
The second one means that you are getting more nervous, or anxious.
Hope this was helpful!!!^_^
These answers are correct!
Looking at the subject will help clarify the right verb.
7. "bark" is singular, therefore "has" is correct because it is singular
8. "cats and monkeys" is plural, therefore "have" is correct because it is plural
9. "summer camps" is plural, therefore "are" is correct because it is plural
Answer:
un texto se necesita entre letras minúscula y mayúsculas