单项选择题

A．15 minutes.
B．30 minutes.
C．45 minutes.
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单项选择题
A．At open doorways.B．In a closed car.C．On the high ground.
A．At open doorways.
B．In a closed car.
C．On the high ground.
单项选择题
A．To read the form to Mr. Ryan.B．To give the form to Mr. Ryan.C．To ask Mr. Ryan some questions.
A．To read the form to Mr. Ryan.
B．To give the form to Mr. Ryan.
C．To ask Mr. Ryan some questions.
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