单项选择题

If law and order ______ not preserved, people will not be able to live a secure life. ( )

A．are
B．were
C．is
D．was
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单项选择题
--Have you seen him recently --Yes. I met him at ______ this morning. ( )
A．a tailor's
B．tailor's
C．the tailor
D．the tailor's
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