问题
________ does your mother often run with her dog?– About half an hour.[ ]
A: How many
B: How long
C: How much
D: How old
B: How long
C: How much
D: How old
正确答案是：
同类题型
If you are weak ____ a subject, ______your teacher for advice can help.
______ is it from your home to school? — It’s about one kilometer away. [ ]
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