The leaves have been swept into huge {{U}}heaps{{/U}}.

题库:综合类 类型:最佳选择题 时间:2017-07-03 03:16:29 免费下载:《单选题》Word试卷

The leaves have been swept into huge {{U}}heaps{{/U}}.
A.loads
B.layers
C.pyramids
D.piles

;