—______ do you walk your dog?  —Sometimes.
#40813
A
How many times
B
How often
C
How long
D
How soon
推荐题目
What about _____________at home?   
#41176
A
do some reading
B
to do some reading
C
doing some reading
D
doing any reading
Where       your pen pals     ?     
#41203
A
are, from
B
do, from
C
do, come
D
is , from
 ---- What are you doing here now? ---- I’m thinking _________ chatting with my good friends.
#40832
A
how fun to
B
how to fun with
C
what to have fun
D
how to have fun