There used to ________ a clean river in the village, but now it’s dirty.

A. be           B. being         C. have         D. having

There used to ________ a clean river in the village, but now it’s dirty.

1. A.
   be
2. B.
   being
3. C.
   have
4. D.
   having

There used to          a bookstore in the neighborhood, but now we have a drugstore _________

A. have; though   B. be; instead     C. had; by mistake     D. has; by accident

There used to ________ a school here.

1. A.
   being
2. B.
   be
3. C.
   have
4. D.
   has