mith finds it hard to clear up the mess, as her children are always ________ whenever she tries to.

I was late for school because my alarm didn’t_________.

The director made two films last year，one of __________ was set in Chongqing．

The boy spent as much time playing video games as he ____ studying.

The novelist knew little about the precious document(文件). _____, he had hardly heard of it before.