单项选择题

The only way to solve the problem of office security was to allow only those present at the meeting to have the key to the safe.

A． Right
B． Wrong
C． Doesn't say
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单项选择题
The promotion literature should be upgraded because many new products have come out.
A． Right
B． Wrong
C． Doesn't say
单项选择题
Those present at the meeting put forward suggestions to solve the problem of office security.
A． Right
B． Wrong
C． Doesn't say
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