At midnight the enemy attacked _________.
| A．without warning | B．without notice | C．without permission | D．A or B |
_________ my task, I went on _________ him because we had planned to practise ______ the drums together later.
| A．Finishing; helping; to play |
| B．Having finished; to help; playing |
| C．To have finished; to help; playing |
| D．Finished; helping; to play |
I have bought some books recently, but ________ interests my father.
| A．nothing of which | B．neither of them |
| C．none of which | D．none of them |
We study in a school ____ fame is known nationwide and it is a school _______ we can fully develop our potential.
| A．which; where | B．whose; which |
| C．who; that | D．whose; in which |
___________ has always been expected, he has finally achieved his dream, ________ makes his parents so proud.
| A．As; which | B．Which; which |
| C．Which; as | D．As; as |
His sister left home in 1998, and ____________ since.
| A．had not been heard of | B．has not been heard of |
| C．had not heard of | D．has not heard of |