______ will take you a lot of time to find him in the crowd.

    A. It　　　　　　 B. I　　　　　　 C. We　　　　　　　　 D. They

______ will take you a lot of time to find him in the crowd.

1. A.
   It
2. B.
   I
3. C.
   We
4. D.
   They

________ will take part in the physics contest will be announced at tomorrow's meeting．

1. A.
   Who
2. B.
   Whom
3. C.
   Which
4. D.
   That

________ will take part in the physics contest will be announced at tomorrow’s meeting．

1. A.
   Whoever
2. B.
   Who
3. C.
   No matter who
4. D.
   That

 ________ will take charge of the office is still in the air.

  A. Whoever                    B. Who                 C. What               D. Anyone