----______have you been learning to swim ? ----Half a year.
| A．How long | B．How often | C．How far | D．When |
Do you come to school by yourself ______ with a friend?
| A．and | B．or | C．but | D．yet |
His father looks _________ and he is looking ________ at his son.
| A．happy; happy | B．happy; happily | C．happily; happy | D．happily; happily |
--- I didn’t see you at the party yesterday. Why?
--- Because I ________ for an important person from America at that time.
| A．was waiting | B．is waiting | C．will wait | D．have waited |
I hope you __________ in this city for a few more days.
| A．to stay | B．stay | C．will stay | D．staying |
Have you _________ the story before?
| A．heard about | B．heard | C．listen about | D．heard from |