Verb Tense

This is the type of error that makes it most important to read the entire passage as a whole first.
You must know the context in order to understand that the verb belongs in either the...
- Past
- Present
- Future

For Example:

Last night, I am sitting in the kitchen to do my homework.
- Last night is a clue that the verb must be in the past, instead of in the present.
SO...Last night, I was sitting in the kitchen to do my homework.