i don't know () to () the question.(每空填一词) ()() our classes at 8:00 a.m.(每空填一词)

问题描述:

i don't know () to () the question.(每空填一词) ()() our classes at 8:00 a.m.(每空填一词)

i don't know ( how ) to ( answer ) the question.(每空填一词)
( We )( have ) our classes at 8:00 a.m.(每空填一词)