问题
选择题
-- ________ does your mother often run with her dog?
-- About hal
f an hour.[ ]
A. How many
B. How long
C. How much
D. How old
答案
答案：B
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-- ________ does your mother often run with her dog?
-- About half an hour.[ ]
A. How many
B. How long
C. How much
D. How old
答案：B