单项选择题

A．They took short and quick steps.
B．They were pulled off the treadwheel.
C．They lost their balance.
D．They took longer and coordinated steps.
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单项选择题
A．Contact the elementary school. B．Sign up for a special class. C．Submit a resume to the dean. D．Talk to Professor Dodge.
A．Contact the elementary school.
B．Sign up for a special class.
C．Submit a resume to the dean.
D．Talk to Professor Dodge.
单项选择题
A．Go to class. B．Go on a picnic. C．Attend a meeting. D．Attend the rally.
A．Go to class.
B．Go on a picnic.
C．Attend a meeting.
D．Attend the rally.
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