._____used to be her job ,but she has now turned_______.

________used to be thought that the earth was square．

1. A.
   He
2. B.
   What
3. C.
   It
4. D.
   That

______ used to be an orphanage here, but we can’t find it now．

1. A.
   There
2. B.
   There was
3. C.
   It
4. D.
   It was

________ used to be thought that the heavier objects fall to the ground faster than the light ones．

1. A.
   He
2. B.
   What
3. C.
   It
4. D.
   That

._____used to be her job ,but she has now turned_______.

   A. To teaching ,to advertising   B. Teaching, t advertise

C. Teaching ,to advertising    D. To teach , an advertising