_____ have you been swimming? For five years.
#41171
A
How many times
B
How long
C
How often
D
How much
推荐题目
--- Could you tell me ? --- Certainly. In 20 minutes.
#40757
A
when will the train to Beijing leave
B
when the train to Beijing would leave
C
when the train to Beijing left
D
when the train to Beijing will leave
