单项选择题

When I entered the classroom, I found the students（）the questions in groups.

A．to discuss
B．discuss
C．discussed
D．discussing

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单项选择题
What can we learn from the conversation（）

A．Alison fell in love with Jim.
B．Jim fell in love with Alison.
C．Jim wasted a lost of time.
D．Jim wasted a lot of energy.
单项选择题
How much does the man spend on red roses（）

A．＄15.
B．＄12.
C．＄21.
D．＄9.
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