单项选择题

A．A chemistry assignment.
B．A study that their chemistry professor did.
C．A class that the woman is taking.
D．A possible job.
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单项选择题
A．Calling someone.B．Attending a concert.C．Waiting in line.D．Canceling reservation.
A．Calling someone.
B．Attending a concert.
C．Waiting in line.
D．Canceling reservation.
单项选择题
A．He visited his friends in Pennsylvania.B．He went out for a picnic.C．He went to a concert.D．He went to a formal dinner.
A．He visited his friends in Pennsylvania.
B．He went out for a picnic.
C．He went to a concert.
D．He went to a formal dinner.
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