When you are faced with this type of exercise, it is best to read the sentence until you have fully understood it. If you don't understand a word you can always use a dictionary or a translator.
Once you have understood it, in this case, you have to see which is the verb that matches for the given person: María.
This verb must match in number and be suitable for the person performing the action.
Next I will write the conjugation of the verb CONOCER for the different people of the present:
