她习惯把钥匙放在口袋里保管。

She prefers ___keeping her keys in her pocket.

尽管天气很热，他仍然坚持每天保持窗户关闭。

Despite the hot weather, he insists on ___keeping the windows closed every day.

他严格遵守交通规则，从不闯红灯。

He is very good at ___keeping the traffic rules and never runs a red light.

把新鲜蔬菜放在冰箱里可以保持更长时间。

___Keeping fresh vegetables in the fridge helps them last longer.