The answer is D.
"Keep", "factor", and "calculate" are all verbs in the list of things the new system allows teachers to do. The other sentences are inconsistent with their list of verbs/adjectives/nouns. Thus, option D is the only one that is grammatically correct.
I am not too good at explaining, so let me know if you are still confused.
Hope this helps! :)
the house of representatives and the senate
Answer: I believe because there are no natural enemies
Explanation:
This is because they’re invasive
Answer:
Always depends on what is being broadcasted
Explanation:
for example, the president made a typo on a tweet and it was talked about on CNN for 15 mins meanwhile there where wild fires in Australia. Now during coronavirus , we are broadcasting how we can work together and flatten the curve.