Question

---________ is“Lucky 52”shown on CCTV-2?

---Every week．

1. A.
   How long
2. B.
   How often
3. C.
   How many times
4. D.
   How soon

Answer 1

B
how long“多长时间，多久”；how often“多长时间一次”；how many times“多少次”；how soon“多久”。根据答语可知问频率，故用how often。