A:甲
B:丙
C:甲和乙
D:乙和丙
今年国庆假期,北京故宫、华山、九寨沟等旅游点,人满为患;许多高速公路也出现大塞车,这除说明我国人民生活水平提高外,还说明我国人口特点 ( )
We usually __________ to school by bike, but she __________ to school on foot.
①记大过 ②降级 ③撤职 ④开除
–No, we can't. We need _______ days.