问题补充：
The twins are sleeping. Don’t .
A. wake him up
B. wake up them
C. wake them up
D. wake up him
答案：
A. wake him up
B. wake up them
(答案→)C. wake them up
D. wake up him
解析：
试题分析: 句意：这对双胞胎正在睡觉，不要吵醒他们。Wake up叫醒、吵醒，up是副词them是代词要加在动词和副词之间，故选C
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