【推荐1】It will be 321 days ________ we take part in the college entrance examination.

【推荐1】All the books donated by the students from urban schools are said _________(send) to the students in rural areas the other day. (所给词的适当形式填空)

【推荐2】My father had just got to my grandparents’ home ________ he received a call from his boss.（用适当的词填空）

【推荐3】They prefer   __________ themselves rather than__________ by others, and they know the fact clearly, that is,   __________   they are, the better the results will be. (discipline)(所给词的适当形式填空)