What skills do you think need to improve as a student

The enemy attacked the headquarters. what is the action verb in the sentence?

Which of the following facts is true for the jallianwalla massacre, as discussed in gandhi's reponse to mr. pennington? a) all members gathered for the vaisakhi fair remained calm. b) general dyer made a verbal proclamation warning all members of the crowd to stay peaceful. c) children attending the vaisakhi fair were killed, d) anyone who tried to run away from the violence was able to escape.

What happens once in a minute twice in a moment and never in a thousand years?