Question

— Do you often go to the movies at weekends？
— Not often, I only go to the cinema __________

1. A.
   at one time
2. B.
   for a time
3. C.
   at a time
4. D.
   from time to time

Answer 1

D
from time to time意思为 “不时；偶尔”，与Not often相吻合。句意：不经常，我只是偶而去看看电影。at one time曾经；for a time一段时间；at a time一次；每次。