_________．Only from 8:00 am to 4:00 pm.
| A．That’s all right | B．Yes，of course |
| C．Sorry，I’m not sure | D．Sorry，I’m afraid not． |
Was it ____ it snowed last night ____ he didn’t come?
| A．because, when | B．for, that | C．that, because | D．because, that |
If you send the best wishes to your mother on Mother’s Day,____will give her a great surprise.
| A．which I think | B．I think which | C．I think that | D．What I think |
He sat quietly in the room,listening to the rain____the window.
| A．knocking | B．hitting | C．striking | D．beating |
Everyone stood up _____ the hero came into the lecture hall.
| A．while | B．instantly | C．every time | D．immediate |
So far, the moon is the only one of the heavenly bodies in space ______ reached by manned spaceships.
| A．that has been | B．what have been | C．which has been | D．that have been |