We must _______ what he is doing now and then we can take action.
| A．get up | B．bring out |
| C．wake up | D．find out |
When I got home，my son________music.
| A．am listening to |
| B．listened to |
| C．was listening to |
| D．was listening |
My mother________while my father________TV.
| A．cooked；was watching |
| B．was cooking；was watching |
| C．was cooked；watched |
| D．cooked；watched |
—I called you at 8:00 yesterday evening，but there was no answer.
—Oh，I’m sorry.I________dinner at my friend’s house.
| A．have |
| B．had |
| C．was having |
| D．have had |
What________from three to four yesterday afternoon？
| A．have you done |
| B．had you done |
| C．did you do |
| D．were you doing |
The event has________to most Americans．
| A．mean |
| B．means |
| C．meaning |
| D．meanings |