My father was reading a book ________ I was doing my homework.
A:before
B:after
C:when
D:while
竖式计算我最棒。
①43-21= ②94-11= ③57-46=
④88-37= ⑤39- 15= ⑥76-32=
小说《平凡的世界》中描述道:田福堂太痛苦了!当年搞合作化时,他曾怀着多幺热烈的感情把左邻右舍拢合在一起,做梦也没想到二十多年后的今天,大家都散伙了。小说中描述的“拢合在一起”和“都散伙了”分别是指( )