在北美，大多数学生9点半睡觉.in (north) america, (most) students go to bed at half past nine 并非所有人都能回答他的问题.(Not) (everyone) can answer his question 这取决于你几点起床.it (depends) (on) when you get up她走了那么长的路，一定是累了吧.she (must) (be) tired after her long walk有少部分学生擅长弹钢琴.(A) (small) (part) of students are good at playing the...
