— _____ do you go for a picnic?
| — _____ do you go for a picnic? — Once a month. |
| [ ] |
| A. How long B. How many times C. How often D. How many time |
可能相似的问题
| — _____ do you go for a picnic? — Once a month. |
| [ ] |
| A. How long B. How many times C. How often D. How many time |