单项选择题

What’s the woman worried about

A．Joan may have taken a wrong train.
B．Joan won’t come to the conference.
C．Joan will miss the next conference.
D．Joan may be late for the opening speech.
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单项选择题
What will be the color of trash cans for paper
A．Pink.
B．Maroon.
C．Green.
D．White.
单项选择题
According to the speaker, why do most recycling program fail
A．Because all the trash cans are the same color.
B．Because not enough people volunteer to collect the trash.
C．Because most people don’t like to sort their trash.
D．Because collections are not made on a regular basis.
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