下面调查的是二(2)班学生最喜欢的课外书的情况。
如果点A在直线y=x-1上,则A点的坐标可以是( )
The room was dark, so she asked me to _________ the lights.
20世纪50年代,新中国的外交工作充满着艰辛,其主要原因是 ( )
—No, we still need to buy a map before we start the trip.