题目内容
单词释义
p________ making air, water, soil dangerous or unfit for use
根据单词释义用正确的单词形式完成句子
Natural habitats are ________
(break to pieces
m________ a man-made instrument which uses power to work
m ________ pieces of metal made into coins, or paper notes with their value printed on them, given and taken in buying and selling.
s________ as, as it is a fact that
e________ at any time
d________ on or to a lower floor
根据英语释义完成句子
________ (unluckily), his father died in the accident.
根据英文释义完成句子
There was no ________ (cause) for being late.
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