A. They are not running.
B. They do not run.
C. They did not run.
D. They will not run.
Answer: They are not running.
A. They are not running.
B. They do not run.
C. They did not run.
D. They will not run.
Answer: They are not running.
Additional Information: In the present continuous tense, the negative form is created by adding 'not' after 'are.'