The road is covered with snow.I can not understand why they

The road is covered with snow.I can not understand why they 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’t understand _______ the The road is covered with snow. I can’t understand ________ t 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 not understand why she left the boy alone . The road was covered with snow.其中的covered是什么词性,形容词吗,它在句子中作的什 Be careful!The road covered with snow.这句句子的时态 I can not understand （ ）the boy alone?A why she left B why d