单项选择题


A．private
B．secret
C．informal
D．public
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单项选择题
A．ordinaryB．usualC．informalD．uncommon
A．ordinary
B．usual
C．informal
D．uncommon
单项选择题
A．don't need beginB．needn't to beginC．need not to beginD．needn't begin
A．don't need begin
B．needn't to begin
C．need not to begin
D．needn't begin
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