The road is covered with snow. I can’t understand ________ t

The road is covered with snow. I can’t understand ________ t The road is covered with snow.I Can’t understand _______ the The road is covered with snow.i can't understand( )they insi the road is covered with snow.i can't understand ()they insi The road is covered with snow.I can't understand they insist The road is covered with snow.I can not understand why they I can’t understand ________. walk,should,covered,the,snow,is,you,with,slowly,because,road The mountain is covered with snow. with snow是什么成分? .________ I can’t understand is ________ she wants to change i can't understand no i can't understand这是哪首歌? I can't understand _____.