A．They look like people raising pigs.
B．They look down upon cleaners.
C．They never do their work carefully.
D．They always make a mess in their offices.

A.They
B.
B．They
C.
C．They
D.
D．They
E.


【参考答案】

D
解析：选项中重复出现的They以及look down upon cleaners，always make a......

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