Answer: C. su
Sentence: Donde esta <u>su</u> ¿profesora?
Answer: There are actually two correct options (I'm a native speaker). Son and eran
Explanation:
Son is in present and eran is in past
La pelota. It is the only one that is not used to play with a ball. It itself is the ball.
I can guarantee you this is the answer.
Answer:
water doesn't affect the titration as water does not react with the reagents or change the number of moles of acid added.
