是what are you looking at?还是 what are you looking

问题描述:

是what are you looking at?还是 what are you looking

what are you looking?

必须要有介词啊
所以是what are you looking at

是前面的哦,不能分开,因为what还要做at的宾语

at
look at sth,看…,介词不能省略