单项选择题

Conversation 1

A．1 week.
B．2 weeks.
C． 3 weeks.
D．4 weeks.
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What measures are taken to ensure the visitors’ safetyThe visitors are required to wear protective hard hats and _____________.
单项选择题
A．Because there was no access to the Internet.B．Because the traffic outside was too noisy.C．Because the air conditioner was out of order.D．Because there was no hot water in the bath.
A．Because there was no access to the Internet.
B．Because the traffic outside was too noisy.
C．Because the air conditioner was out of order.
D．Because there was no hot water in the bath.
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