----        does your sister surf the internet?---- About once a week.
#43972
A
How long
B
How often
C
How many
D
How soon
推荐题目
— ________ do you watch TV?— Every day.
#41441
A
How old
B
How many
C
How much
D
How often
_________ students will go to the beach for the picnic.
#41198
A
Two hundred of
B
Two hundred
C
Two hundreds of
D
Two hundreds
—________ will you take?  —Small, please. 
#40600
A
What colour
B
What size
C
How much
D
How many