—__________ do I have to change the robot’s batteries? —Every two months.
#41136
A
How long
B
How soon
C
How often
D
How many
推荐题目
_____ have you been swimming? For five years.
#41171
A
How many times
B
How long
C
How often
D
How much
_____speak more English in class?
#40946
A
You should
B
What about
C
Why don’t
D
Why not
——      do you eat vegetables?——Every day.
#40803
A
How long
B
How often
C
How much
D
how far