I didn’t know where to send this _______ letter.
（A）registered
（B）maid
（C）mail
（D）male
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- 1A contemporary _______ once said: man lives on the earth as a guest of green plants.
- 2The use of the computer has ______ many other societal reforms.
- 3They attract females with elaborate ______ rituals.
- 4A great deal of ( ) is made in Scotland.(威士忌酒)
- 5The jar(罐子) ( ) ten glasses of water.(contain的适当形式)
- 6Owls and bats are ________ creatures.
