Conjugate the appropriate verb, 
 saber or conocer, which would be used in writing the following sentences in Spanish. 
 12.
 _______
 Maria knew everyone.
 13.
 _______
 Because he had already seen the movie, he knew what happened?
 14.
 _______
 The student knows the an
 swer.
 15.
 _______
 He knows Bac
 h’s music.
 16.
 _______
 Do you (
 tú
 ) know who is singing?