“它结束了春秋战国以来诸侯国长期割据争战的局面,将中国历史推进到一个崭新的阶段。”这里的“它”与哪个朝代有关（ ）
A：夏朝
B：商朝
C：西周
D：秦朝
用所给词的适当形式填空
（1）My mother often ____ (read) books after work.
（2）The boy ____ (ride) a bike to school every day.
（3）Mum always ____ (wash) clothes on Saturday.
（4）Li Kai ____（have）a cool bag.
（5）My father never ____ (go) to work late.
