Give the correct form of verbs given
Mrs. Parker (be) ........... an English teacher for twenty-nine years. She first (start) ................ teaching English at a small school in the countryside. After (teach) .............. there for ten years, she (move)................ to a big city.
A.has been/ started/ teaching/ moved
B.had been/ started/ teaching/ moved
C.has been/ have started/ teaching/ moved
D.has been/ started/ teach/ moved