Dinner isn't teady yet._______ will it be ready?

问题描述:

Dinner isn't teady yet._______ will it be ready?
a.how soon b.how long c.how much d.how often

a
要过多久才准备好?
注:B 多久( 问长度); C 多少( 问价钱); D 多久一次( 问频率)