i am not sure-----her sister will come here or stay at home .a.whether b.when c.what d.where
问题描述：
i am not sure-----her sister will come here or stay at home .a.whether b.when c.what d.where
答
a.whether
whether or固定搭配不是whether or not固定搭配吗不一定非要加Not两种情况whether he is a student or not whether he is a student or teacher只是根据表达的需要灵活对待而已