楼梯踏步线怎么放:The villagers don't know ____elephant is ____ useful animal.

The villagers don't know ____elephant is ____ useful animal. 31.The villagers went out in the woods ,____ for the ____ child. The promiese don not come easy Don't light the lamp. Don't read under the sun don’t rock the boat是什么意思？ i, colour,don't,the,like(.) l don"t like the colour.The yellow one__nice? Don protective clothing and energize the fluoroscope to view the detector on the fluoro screen. i don't want to dance with the devil