Thelittleboystoodbeforetheshopwindow,______hiseyesonthetoybearinit.[ ]

The manager had fallen asleep where he_____, without undressing. [ ]

Giant pandas will have tolive if farmers keep ________ their living areas.

The boy _____ at his enemy, without saying a word.

I heard a student killed his mother cruelly.– So did I. It has ____a serious problemabout the education system in China.