Seeing the teacher raising her finger to her lips as __________ for silence, all the students sat down in a standard __________
| A．a gesture; situation | B．a mark; pose |
| C．a sign; position | D．a symbol; condition |
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 |
We are not ready to go into production yet, for the new switch mechanism isn’t fully ______.
| A．tried out | B．tested out |
| C．worked out | D．turned out |