The wall is covered with a__ . We should clean them up应该填什么

The wall was covered with a____. The wall is covered with a__ . We should clean them up应该填什么 be covered with 和be covered by 的区别the wall seem to be covered witn the skin of a fishit looks as if the stadium is covered by a gray net of steel分析一下这两句 The ground is covered with The ground is covered with d_____leaves(die) This is the Great Wall. where is the great wall? The Great Wall is the____(long)wall in the world The road covered with cherry tree flowers.looks as though it is covered with Three fourths of the land____ with trees.A.are covered B.is covered 选那一个 The Great Wall is the ()of China there is a wall.that is called Great Wall变为一句话 we call the wall The Great Wall 是什么语法? the cover is covered with dust.如题 The mountain is covered with snow. with snow是什么成分? is this word covered in the dectionary?求翻译 the ground is covered with fallen leaves 能否改为 fell The square is covered ( )colourful flowers填介词 The sqiare is covered( )colourful flowers.填介词是square