单项选择题

A．were
B．are
C．used
D．had been
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单项选择题
Who volunteered to clean up the oil
A．Businessmen, storekeepers, students and others.
B．Storekeepers, reporters, businessmen, and others.
C．Farmers, scientists, teachers and others.
D．Scientists, technicians, businessmen and others.
单项选择题
A．evenB．justC．butD．still
A．even
B．just
C．but
D．still
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