1.  Right now, I __ (know) the answer.  2.  At this moment, she .... ( understand) the lesson. 3.  Yesterday afternoon, he __ (own) a red car. 4.  Last night at 8 o'clock, they __ (believe) in ghosts. 5.  This morning, I __ (have) a headache. 6.  Currently, she __ (prefer) coffee to tea.