单项选择题

There()an old man and two bodyguards standing on the platform.

A. to be
B. being
C. is
D. are

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Which country in Asia hasn’t had a minimum wage().

A. Philippines.
B. Singapore.
C. Indonesia.
D. India.
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From the story we can know that mouth-to-mouth and compressions must be done().

A. alternately.
B. simultaneously.
C. by two different people.
D. for at least ten minutes.
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