问题补充：
Written in a hurry, .
A. they found many mistakes in the report
B. Sam made lots of mistakes in the report
C. there are many mistakes in the report
D. the report is full of mistakes
答案：
A. they found many mistakes in the report
B. Sam made lots of mistakes in the report
C. there are many mistakes in the report
(答案→)D. the report is full of mistakes
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