【简答题】The road was covered with fallen flowers of the _________. (trees, trees')
【单选题】The road was covered with fallen flowers of the ______.
【单选题】The road was covered ___________fallen leaves.
【单选题】The road was covered with fallen flowers of the _______.
【简答题】路面结了一层冰。 The road was covered with ___________________.(sheet)