This seems to be a declarative sentence. It talks about the reaction of the policeman to a specific thing. His expression is not pleasant. What he might saw is something not good and something to worry about. Other possible thing could be there an heinous crime scene that he faced at that moment. It depends on the situation.<span />
Answer:
I would say the answer choice C. B
Explanation:
Answer: Oblivious
Explanation: the definition of oblivious is: not aware of or not concerned about what is happening around one, which basically means completely unaware
Answer:
ate
Explanation:
it should be =She ate food yesterday"
The correct answer is B. always.
They are always coplanar if there exists a geometric plane that contains them all, which indeed exists.