Which of the following italicized parts is used as a predicative（表语)？A．I"m now downstair
表语
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Which of the following italicized parts is used as a predicative(表语)？
A．I"m now downstairs,waiting for you.
B．He runs downstairs to see his beloved girl friend.
C．China is a developing country.
D．The factory is developing quickly with the lead of an ambitious young woman.
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