will John come back home from school?In an hour a：how often b：how soon c：how long
问题描述：
will John come back home from school?In an hour a：how often b：how soon c：how long
答
will John come back home from school?In an hour a：how often b：how soon c：how long
答案：B
how soon 过多久才...答语用“in+段时间”.谢了！