单项选择题

15 The number of orders went up we increased our prices by 15%.

A. because
B. although
C. when
D. if
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The warehouse entrance is the main car park.
A. opposite to
B. opposite of
C. opposite from
D. opposite
单项选择题
14 Mr Brown ten years.
A. has been head of this department for
B. is head of this department for
C. is head of this department since
D. has been head of this department since
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