A:向左平移个单位长度
B:向右平移个单位长度
C:向左平移个单位长度
D:向右平移个单位长度
I got on the bus and found a seat near the back, and then I noticed a man ____ (sit) at the front.
It will be hard for us to get up in the morning if we ___________ to bed too late.